-- -- Show CPU Usage for Active Sessions -- SET PAUSE ON SET PAUSE 'Press Return to Continue' SET PAGESIZE 60 SET LINESIZE 300 COLUMN username FORMAT A30 COLUMN sid FORMAT 999,999,999 COLUMN serial# FORMAT 999,999,999 COLUMN "cpu usage (seconds)" FORMAT 999,999,999.0000 SELECT s.username, t.sid, s.serial#, SUM(VALUE/100) as "cpu usage (seconds)" FROM v$session s, v$sesstat t, v$statname n WHERE t.STATISTIC# = n.STATISTIC# AND NAME like '%CPU used by this session%' AND t.SID = s.SID AND s.status='ACTIVE' AND s.username is not null GROUP BY username,t.sid,s.serial# /
August 25, 2017
CPU consumptions by ACTIVE sessions
Getting Session Details | sid.sql
col sid format 99999
col username format a10
col osuser format a10
col program format a25
col process format 9999999
col spid format 999999
col logon_time format a13
set lines 150
set heading off
set verify off
set feedback off
undefine sid_number
undefine spid_number
rem accept sid_number number prompt "pl_enter_sid:"
col sid NEW_VALUE sid_number noprint
col spid NEW_VALUE spid_number noprint
select s.sid sid,
p.spid spid
-- ,decode(count(*), 1,'null','No Session Found with this info') " "
FROM v$session s,
v$process p
WHERE s.sid LIKE NVL('&sid', '%')
AND p.spid LIKE NVL ('&OS_ProcessID', '%')
AND s.process LIKE NVL('&Client_Process', '%')
AND s.paddr = p.addr
-- group by s.sid, p.spid;
PROMPT Session and Process Information
PROMPT -------------------------------
col event for a30
select ' SID : '||v.sid || chr(10)||
' Serial Number : '||v.serial# || chr(10) ||
' Oracle User Name : '||v.username || chr(10) ||
' Client OS user name : '||v.osuser || chr(10) ||
' Client Process ID : '||v.process || chr(10) ||
' Client machine Name : '||v.machine || chr(10) ||
' Oracle PID : '||p.pid || chr(10) ||
' OS Process ID(spid) : '||p.spid || chr(10) ||
' Session''s Status : '||v.status || chr(10) ||
' Logon Time : '||to_char(v.logon_time, 'MM/DD HH24:MIpm') || chr(10) ||
' Program Name : '||v.program || chr(10) ||
' module : '||v.module || chr(10) ||
' Hashvalue : '||v.sql_hash_value || chr(10)
from v$session v, v$process p
where v.paddr = p.addr
and v.serial# > 1
and p.background is null
and p.username is not null
and sid = &sid_number
order by logon_time, v.status, 1
/
PROMPT Sql Statement
PROMPT --------------
select sql_text
from v$sqltext , v$session
where v$sqltext.address = v$session.sql_address
and sid = &sid_number
order by piece
/
PROMPT
PROMPT Event Wait Information
PROMPT ----------------------
select ' SID '|| &sid_number ||' is waiting on event : ' || x.event || chr(10) ||
' P1 Text : ' || x.p1text || chr(10) ||
' P1 Value : ' || x.p1 || chr(10) ||
' P2 Text : ' || x.p2text || chr(10) ||
' P2 Value : ' || x.p2 || chr(10) ||
' P3 Text : ' || x.p3text || chr(10) ||
' P3 Value : ' || x.p3
from v$session_wait x
where x.sid= &sid_number
/
PROMPT
PROMPT Session Statistics
PROMPT ------------------
select ' '|| b.name ||' : '||decode(b.name, 'redo size', round(a.value/1024/1024,2)||' M', a.value)
from v$session s, v$sesstat a, v$statname b
where a.statistic# = b.statistic#
and name in ('redo size', 'parse count (total)', 'parse count (hard)', 'user commits')
and s.sid = &sid_number
and a.sid = &sid_number
--order by b.name
order by decode(b.name, 'redo size', 1, 2), b.name
/
COLUMN USERNAME FORMAT a10
COLUMN status FORMAT a8
column RBS_NAME format a10
PROMPT
PROMPT Transaction and Rollback Information
PROMPT ------------------------------------
select ' Rollback Used : '||t.used_ublk*8192/1024/1024 ||' M' || chr(10) ||
' Rollback Records : '||t.used_urec || chr(10)||
' Rollback Segment Number : '||t.xidusn || chr(10)||
' Rollback Segment Name : '||r.name || chr(10)||
' Logical IOs : '||t.log_io || chr(10)||
' Physical IOs : '||t.phy_io || chr(10)||
' RBS Startng Extent ID : '||t.start_uext || chr(10)||
' Transaction Start Time : '||t.start_time || chr(10)||
' Transaction_Status : '||t.status
FROM v$transaction t, v$session s, v$rollname r
WHERE t.addr = s.taddr
and r.usn = t.xidusn
and s.sid = &sid_number
/
PROMPT
PROMPT Sort Information
PROMPT ----------------
column username format a20
column user format a20
column tablespace format a20
SELECT ' Sort Space Used(8k block size is asssumed : '||u.blocks/1024*8 ||' M' || chr(10) ||
' Sorting Tablespace : '||u.tablespace || chr(10)||
' Sort Tablespace Type : '||u.contents || chr(10)||
' Total Extents Used for Sorting : '||u.extents
FROM v$session s, v$sort_usage u
WHERE s.saddr = u.session_addr
AND s.sid = &sid_number
/
set heading on
set verify on
clear column
col username format a10
col osuser format a10
col program format a25
col process format 9999999
col spid format 999999
col logon_time format a13
set lines 150
set heading off
set verify off
set feedback off
undefine sid_number
undefine spid_number
rem accept sid_number number prompt "pl_enter_sid:"
col sid NEW_VALUE sid_number noprint
col spid NEW_VALUE spid_number noprint
select s.sid sid,
p.spid spid
-- ,decode(count(*), 1,'null','No Session Found with this info') " "
FROM v$session s,
v$process p
WHERE s.sid LIKE NVL('&sid', '%')
AND p.spid LIKE NVL ('&OS_ProcessID', '%')
AND s.process LIKE NVL('&Client_Process', '%')
AND s.paddr = p.addr
-- group by s.sid, p.spid;
PROMPT Session and Process Information
PROMPT -------------------------------
col event for a30
select ' SID : '||v.sid || chr(10)||
' Serial Number : '||v.serial# || chr(10) ||
' Oracle User Name : '||v.username || chr(10) ||
' Client OS user name : '||v.osuser || chr(10) ||
' Client Process ID : '||v.process || chr(10) ||
' Client machine Name : '||v.machine || chr(10) ||
' Oracle PID : '||p.pid || chr(10) ||
' OS Process ID(spid) : '||p.spid || chr(10) ||
' Session''s Status : '||v.status || chr(10) ||
' Logon Time : '||to_char(v.logon_time, 'MM/DD HH24:MIpm') || chr(10) ||
' Program Name : '||v.program || chr(10) ||
' module : '||v.module || chr(10) ||
' Hashvalue : '||v.sql_hash_value || chr(10)
from v$session v, v$process p
where v.paddr = p.addr
and v.serial# > 1
and p.background is null
and p.username is not null
and sid = &sid_number
order by logon_time, v.status, 1
/
PROMPT Sql Statement
PROMPT --------------
select sql_text
from v$sqltext , v$session
where v$sqltext.address = v$session.sql_address
and sid = &sid_number
order by piece
/
PROMPT
PROMPT Event Wait Information
PROMPT ----------------------
select ' SID '|| &sid_number ||' is waiting on event : ' || x.event || chr(10) ||
' P1 Text : ' || x.p1text || chr(10) ||
' P1 Value : ' || x.p1 || chr(10) ||
' P2 Text : ' || x.p2text || chr(10) ||
' P2 Value : ' || x.p2 || chr(10) ||
' P3 Text : ' || x.p3text || chr(10) ||
' P3 Value : ' || x.p3
from v$session_wait x
where x.sid= &sid_number
/
PROMPT
PROMPT Session Statistics
PROMPT ------------------
select ' '|| b.name ||' : '||decode(b.name, 'redo size', round(a.value/1024/1024,2)||' M', a.value)
from v$session s, v$sesstat a, v$statname b
where a.statistic# = b.statistic#
and name in ('redo size', 'parse count (total)', 'parse count (hard)', 'user commits')
and s.sid = &sid_number
and a.sid = &sid_number
--order by b.name
order by decode(b.name, 'redo size', 1, 2), b.name
/
COLUMN USERNAME FORMAT a10
COLUMN status FORMAT a8
column RBS_NAME format a10
PROMPT
PROMPT Transaction and Rollback Information
PROMPT ------------------------------------
select ' Rollback Used : '||t.used_ublk*8192/1024/1024 ||' M' || chr(10) ||
' Rollback Records : '||t.used_urec || chr(10)||
' Rollback Segment Number : '||t.xidusn || chr(10)||
' Rollback Segment Name : '||r.name || chr(10)||
' Logical IOs : '||t.log_io || chr(10)||
' Physical IOs : '||t.phy_io || chr(10)||
' RBS Startng Extent ID : '||t.start_uext || chr(10)||
' Transaction Start Time : '||t.start_time || chr(10)||
' Transaction_Status : '||t.status
FROM v$transaction t, v$session s, v$rollname r
WHERE t.addr = s.taddr
and r.usn = t.xidusn
and s.sid = &sid_number
/
PROMPT
PROMPT Sort Information
PROMPT ----------------
column username format a20
column user format a20
column tablespace format a20
SELECT ' Sort Space Used(8k block size is asssumed : '||u.blocks/1024*8 ||' M' || chr(10) ||
' Sorting Tablespace : '||u.tablespace || chr(10)||
' Sort Tablespace Type : '||u.contents || chr(10)||
' Total Extents Used for Sorting : '||u.extents
FROM v$session s, v$sort_usage u
WHERE s.saddr = u.session_addr
AND s.sid = &sid_number
/
set heading on
set verify on
clear column
June 22, 2014
Tablespace Utilization Script for Tablespace Space Used % more than 80 %
Oracle Tablespace Utilization Script (including AUTOEXTEND) for generating report of more than 80 % used tablespaces (IN GB)
1. Check the database details.
2. Check the tablespace Utilization.
3. Check the details of the datafiles for a particular TableSpace which needs attention.
4. Resize or Add the datafiles as per the standards of the existing datafiles on the database.
1. Check the database details.
$ sqlplus "/as sysdba"
set pages 9999 lines 300
col OPEN_MODE for a10
col HOST_NAME for a30
select name DB_NAME,HOST_NAME,DATABASE_ROLE from v$database,v$instance;
2. Check the tablespace Utilization.
Tablespace Utilization Script including AUTOEXTEND (IN GB)
----------------------------------------------------------
$ sqlplus "/as sysdba"
set pages 50000 lines 32767
col tablespace_name format a30
col TABLESPACE_NAME heading "Tablespace|Name"
col Allocated_size heading "Allocated|Size(GB)" form 99999999.99
col Current_size heading "Current|Size(GB)" form 99999999.99
col Used_size heading "Used|Size(GB)" form 99999999.99
col Available_size heading "Available|Size(GB)" form 99999999.99
col Pct_used heading "%Used (vs)|(Allocated)" form 99999999.99
select a.tablespace_name
,a.alloc_size/1024/1024/1024 Allocated_size
,a.cur_size/1024/1024/1024 Current_Size
,(u.used+a.file_count*65536)/1024/1024/1024 Used_size
,(a.alloc_size-(u.used+a.file_count*65536))/1024/1024/1024 Available_size
,((u.used+a.file_count*65536)*100)/a.alloc_size Pct_used
from dba_tablespaces t
,(select t1.tablespace_name
,nvl(sum(s.bytes),0) used
from dba_segments s
,dba_tablespaces t1
where t1.tablespace_name=s.tablespace_name(+)
group by t1.tablespace_name) u
,(select d.tablespace_name
,sum(greatest(d.bytes,nvl(d.maxbytes,0))) alloc_size
,sum(d.bytes) cur_size
,count(*) file_count
from dba_data_files d
group by d.tablespace_name) a
where t.tablespace_name=u.tablespace_name
and ((u.used+a.file_count*65536)*100)/a.alloc_size>80
and t.tablespace_name=a.tablespace_name
order by t.tablespace_name
/
1. Check the database details.
2. Check the tablespace Utilization.
3. Check the details of the datafiles for a particular TableSpace which needs attention.
4. Resize or Add the datafiles as per the standards of the existing datafiles on the database.
1. Check the database details.
$ sqlplus "/as sysdba"
set pages 9999 lines 300
col OPEN_MODE for a10
col HOST_NAME for a30
select name DB_NAME,HOST_NAME,DATABASE_ROLE from v$database,v$instance;
2. Check the tablespace Utilization.
Tablespace Utilization Script including AUTOEXTEND (IN GB)
----------------------------------------------------------
$ sqlplus "/as sysdba"
set pages 50000 lines 32767
col tablespace_name format a30
col TABLESPACE_NAME heading "Tablespace|Name"
col Allocated_size heading "Allocated|Size(GB)" form 99999999.99
col Current_size heading "Current|Size(GB)" form 99999999.99
col Used_size heading "Used|Size(GB)" form 99999999.99
col Available_size heading "Available|Size(GB)" form 99999999.99
col Pct_used heading "%Used (vs)|(Allocated)" form 99999999.99
select a.tablespace_name
,a.alloc_size/1024/1024/1024 Allocated_size
,a.cur_size/1024/1024/1024 Current_Size
,(u.used+a.file_count*65536)/1024/1024/1024 Used_size
,(a.alloc_size-(u.used+a.file_count*65536))/1024/1024/1024 Available_size
,((u.used+a.file_count*65536)*100)/a.alloc_size Pct_used
from dba_tablespaces t
,(select t1.tablespace_name
,nvl(sum(s.bytes),0) used
from dba_segments s
,dba_tablespaces t1
where t1.tablespace_name=s.tablespace_name(+)
group by t1.tablespace_name) u
,(select d.tablespace_name
,sum(greatest(d.bytes,nvl(d.maxbytes,0))) alloc_size
,sum(d.bytes) cur_size
,count(*) file_count
from dba_data_files d
group by d.tablespace_name) a
where t.tablespace_name=u.tablespace_name
and ((u.used+a.file_count*65536)*100)/a.alloc_size>80
and t.tablespace_name=a.tablespace_name
order by t.tablespace_name
/
3. Check the details of the datafiles for a particular TableSpace which needs attention.
Datafiles of a particular TableSpace:
------------------------------------
set pages 50000 lines 32767
col tablespace_name for a30
col CREATION_TIME for a15
col file_name for a70
select dd.tablespace_name TABLESPACE_NAME,dd.file_name,dd.bytes/1024/1024 Size_MB,dd.autoextensible,dd.maxbytes/1024/1024 MAXSIZE_MB,df.CREATION_TIME
from dba_data_files dd, v$datafile df where df.name=dd.file_name and tablespace_name='&TABLESPACENAME' order by 1,2,6;
Note:- If required, can get the DDL of a tablespace as below.
TABLESPACE DDL
--------------
set pagesize 0
SET LONG 9999999
select dbms_metadata.get_ddl('TABLESPACE','&TABLESPACE_NAME') FROM DUAL;
How to generate Multiple AWR reports
Multiple AWR report generation script
The following script can be used for AWR reports generation, for specific intervals between the required Snapshots generated.
The below script (awr_report_generate.sh) is to generate AWR reports for the specific intervals between the required Snapshots generated.
Let say, there is a requirement to generate awr reports for every 2 hours of previous day from 00:00 hrs to current date 00:00 hrs ie., 24 hrs.
Reuirements:-
===========
First we need to get the Begin Snap ID and End Snap ID, in order to generate multiple awr reports using the below script.
$ sqlplus "/as sysdba"
SQL> @?/rdbms/admin/awrrpt.sql (For RAC, SQL> @?/rdbms/admin/awrrpti.sql)
.
.
.
Specify the Report Type
~~~~~~~~~~~~~~~~~~~~~~~
Enter 'html' for an HTML report, or 'text' for plain text
Defaults to 'html'
Enter value for report_type: ---------------> press 'Enter' Key
Specify the number of days of snapshots to choose from
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Enter value for num_days:
Listing the last n days of Completed Snapshots ---------------> here 'n' represents the number of days we have entered for generating awr reports.
NOTE:-
====
Here, for the required period, make a note of the required Begin Snap ID and End Snap ID.
Create a script awr_report_generate.sh:-
======================================
SQL> exit
$ vi awr_report_generate.sh
#!/usr/bin/sh
echo "Enter the value for Begin Snapshot Id :"
read beginid
echo "Enter the value for End Snapshot Id:"
read endid
echo "Enter the value for interval between Snapshot Id's. To generate reports between consecutive Snapshop Id's, Enter '1'. Else, enter desired value:"
read snapint
echo "Enter the value for report type: html/text"
read repfmt
echo "Enter the path for unix directory to generate the reports. Press 'Enter' to generate the reports in current working directory:"
read repdir
if [ "$repdir" = "" ]
then
repdir=$PWD
fi
while [ $beginid -lt $endid ]
do
tempid=`echo $beginid + $snapint |bc`
sqlplus -s '/as sysdba'<<EOF
set verify off
set feedback off
set pages 0
set serveroutput on
clear break compute;
repfooter off;
ttitle off;
btitle off;
set heading on;
set timing off veri off space 1 flush on pause off termout on numwidth 10;
set echo off feedback off pagesize 0 linesize 1500 newpage 1 recsep off;
set trimspool on trimout on define "&" concat "." serveroutput on;
set underline on;
col endid new_value endid;
col repname new_value repname;
col dbid new_value dbid;
col inst_num new_value inst_num;
define beginid=$beginid;
define tempid=$tempid;
variable repname varchar2(60);
variable dbid varchar2(10);
variable inst_num varchar2(2);
select dbid dbid from v\$database;
select instance_number inst_num from v\$instance ;
select '$repdir/AWR_'||(select instance_name inst_name from v\$instance)||'_'||(select to_char(END_INTERVAL_TIME,'DDMONYY_HH24MI')from dba_hist_snapshot where snap_id='$beginid' and instance_number=(select instance_number from v\$instance))||'_'||(select to_char(END_INTERVAL_TIME,'DDMONYY_HH24MI')from dba_hist_snapshot where snap_id='$tempid' and instance_number=(select instance_number from v\$instance))||'.$repfmt' repname from dual;
spool &repname
select output from table(dbms_workload_repository.awr_report_$repfmt(&dbid,&inst_num,&&beginid,&&tempid,0));
spool off
exit
EOF
beginid=`echo $beginid + $snapint |bc`
done
-- Press esc
:wq
$ ls -lrt awr_report_generate.sh
Run the script:-
==============
$ sh awr_report_generate.sh
$ ls -lrt
The following script can be used for AWR reports generation, for specific intervals between the required Snapshots generated.
The below script (awr_report_generate.sh) is to generate AWR reports for the specific intervals between the required Snapshots generated.
Let say, there is a requirement to generate awr reports for every 2 hours of previous day from 00:00 hrs to current date 00:00 hrs ie., 24 hrs.
Reuirements:-
===========
First we need to get the Begin Snap ID and End Snap ID, in order to generate multiple awr reports using the below script.
$ sqlplus "/as sysdba"
SQL> @?/rdbms/admin/awrrpt.sql (For RAC, SQL> @?/rdbms/admin/awrrpti.sql)
.
.
.
Specify the Report Type
~~~~~~~~~~~~~~~~~~~~~~~
Enter 'html' for an HTML report, or 'text' for plain text
Defaults to 'html'
Enter value for report_type: ---------------> press 'Enter' Key
Specify the number of days of snapshots to choose from
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Enter value for num_days:
Listing the last n days of Completed Snapshots ---------------> here 'n' represents the number of days we have entered for generating awr reports.
NOTE:-
====
Here, for the required period, make a note of the required Begin Snap ID and End Snap ID.
Create a script awr_report_generate.sh:-
======================================
SQL> exit
$ vi awr_report_generate.sh
#!/usr/bin/sh
echo "Enter the value for Begin Snapshot Id :"
read beginid
echo "Enter the value for End Snapshot Id:"
read endid
echo "Enter the value for interval between Snapshot Id's. To generate reports between consecutive Snapshop Id's, Enter '1'. Else, enter desired value:"
read snapint
echo "Enter the value for report type: html/text"
read repfmt
echo "Enter the path for unix directory to generate the reports. Press 'Enter' to generate the reports in current working directory:"
read repdir
if [ "$repdir" = "" ]
then
repdir=$PWD
fi
while [ $beginid -lt $endid ]
do
tempid=`echo $beginid + $snapint |bc`
sqlplus -s '/as sysdba'<<EOF
set verify off
set feedback off
set pages 0
set serveroutput on
clear break compute;
repfooter off;
ttitle off;
btitle off;
set heading on;
set timing off veri off space 1 flush on pause off termout on numwidth 10;
set echo off feedback off pagesize 0 linesize 1500 newpage 1 recsep off;
set trimspool on trimout on define "&" concat "." serveroutput on;
set underline on;
col endid new_value endid;
col repname new_value repname;
col dbid new_value dbid;
col inst_num new_value inst_num;
define beginid=$beginid;
define tempid=$tempid;
variable repname varchar2(60);
variable dbid varchar2(10);
variable inst_num varchar2(2);
select dbid dbid from v\$database;
select instance_number inst_num from v\$instance ;
select '$repdir/AWR_'||(select instance_name inst_name from v\$instance)||'_'||(select to_char(END_INTERVAL_TIME,'DDMONYY_HH24MI')from dba_hist_snapshot where snap_id='$beginid' and instance_number=(select instance_number from v\$instance))||'_'||(select to_char(END_INTERVAL_TIME,'DDMONYY_HH24MI')from dba_hist_snapshot where snap_id='$tempid' and instance_number=(select instance_number from v\$instance))||'.$repfmt' repname from dual;
spool &repname
select output from table(dbms_workload_repository.awr_report_$repfmt(&dbid,&inst_num,&&beginid,&&tempid,0));
spool off
exit
EOF
beginid=`echo $beginid + $snapint |bc`
done
-- Press esc
:wq
$ ls -lrt awr_report_generate.sh
Run the script:-
==============
$ sh awr_report_generate.sh
$ ls -lrt
How to check AWR interval and retention Settings
AWR interval and retention Settings
The following query can be used to check the current settings for the AWR interval and AWR retention.
The query returns the current AWR interval values in minutes.
set pages 50000 lines 32767
col snap_interval format a20
col retention format a20
col topnsql format a20
select extract( day from snap_interval) *24*60+
extract( hour from snap_interval) *60+
extract( minute from snap_interval ) "Snapshot Interval",
extract( day from retention) *24*60+
extract( hour from retention) *60+
extract( minute from retention ) "Retention Interval"
from dba_hist_wr_control;
Snapshot Interval Retention Interval
----------------- ------------------
The following query can be used to check the current settings for the AWR interval and AWR retention.
The query returns the current AWR interval values in minutes.
set pages 50000 lines 32767
col snap_interval format a20
col retention format a20
col topnsql format a20
select extract( day from snap_interval) *24*60+
extract( hour from snap_interval) *60+
extract( minute from snap_interval ) "Snapshot Interval",
extract( day from retention) *24*60+
extract( hour from retention) *60+
extract( minute from retention ) "Retention Interval"
from dba_hist_wr_control;
Snapshot Interval Retention Interval
----------------- ------------------
Database health checks in Oracle
Performing Database health checks, when there is an issue reported by Application users.
1. Check the Database details
2. Monitor the consumption of resources
3. Check the Alert Log
4. Check Listener log
5. Check Filesystem space Usage
6. Generate AWR Report
7. Generate ADDM Report
8. Finding Locks,Blocker Session and Waiting sessions in a oracle database
9. Check for alerts in OEM
1. Check the Database details :-
=============================
set pages 9999 lines 300
col OPEN_MODE for a10
col HOST_NAME for a30
select name DB_NAME,HOST_NAME,DATABASE_ROLE,OPEN_MODE,version DB_VERSION,LOGINS,to_char(STARTUP_TIME,'DD-MON-YYYY HH24:MI:SS') "DB UP TIME" from v$database,gv$instance;
For RAC:
-------
set pages 9999 lines 300
col OPEN_MODE for a10
col HOST_NAME for a30
select INST_ID,INSTANCE_NAME, name DB_NAME,HOST_NAME,DATABASE_ROLE,OPEN_MODE,version DB_VERSION,LOGINS,to_char(STARTUP_TIME,'DD-MON-YYYY HH24:MI:SS') "DB UP TIME" from v$database,gv$instance;
2. Monitor the consumption of resources :-
=======================================
select * from v$resource_limit where resource_name in ('processes','sessions');
The v$session views shows current sessions (which change rapidly),
while the v$resource_limit shows the current and maximum global resource utilization for some system resources.
3. Check the Alert Log :-
======================
$locate alert_<ORACLE_SID>
--- OR ---
UNIX/Linux command to locate the alert log file
-----------------------------------------------
$ find / -name 'alert_*.log' 2> /dev/null
vi <alert_log_location_of_the_above_output>
shift+g
?ORA- ---> press enter key
press 'n' to check backwards/up side and 'N' for forward/down side search.
:q! --and press enter, for exiting vi editor
--- OR ---
11G
===
$ sqlplus "/as sysdba"
set pages 9999 lines 300
col NAME for a15
col VALUE for a60
select name, value from v$diag_info where name = 'Diag Trace';
On a server with multiple instances, each instance will have it's own background_dump_dest in $ORACLE_HOME/diag/$ORACLE_SID/trace directory
Before 11G
==========
$ sqlplus "/as sysdba"
set pages 9999 lines 300
show parameter BACKGROUND_DUMP_DEST;
On a server with multiple instances, each instance will have it's own background_dump_dest in $ORACLE_HOME/admin/$ORACLE_SID/bdump directory
4. Check Listener log :-
=====================
$locate listener.log
--- OR ---
UNIX/Linux command to locate the listener log file
--------------------------------------------------
$ find / -name 'listener.log' 2> /dev/null
vi <listener.log>
shift+g
?TNS- ---> press enter key
press 'n' to check backwords and 'N' for forword search.
AND
shift+g
?error ---> press enter key
press 'n' to check backwords and 'N' for forword search.
:q! --and press enter, for exiting vi editor
--- OR ---
$lsnrctl status
from the output you can get the listener log location (see the value for "Listener Log File" in the output).
5. Check Filesystem space Usage :-
===============================
df -h (Linux / UNIX)
df -g (AIX)
6. Generate AWR Report :-
======================
Generate AWR report for current and before to compare
SQL> @?/rdbms/admin/awrrpt.sql (For RAC, @?/rdbms/admin/awrrpti.sql - for each instance)
If Required,
SQL> @?/rdbms/admin/awrddrpt.sql ----> Produces Workload Repository Compare Periods Report
7. Generate ADDM Report :-
=======================
Generate ADDM report for current and before to compare.
ADDM report provides Findings and Recommendations to fix the issue.
SQL> @?/rdbms/admin/addmrpt.sql (For RAC, @?/rdbms/admin/addmrpti.sql - for each instance)
8. Finding Locks,Blocker Session and Waiting sessions in a oracle database :-
========================================================================
Select * from v$lock;
Select * from gv_$lock; (For RAC)
A fast way to check blocking/waiting situations
-----------------------------------------------
SELECT * FROM v$lock WHERE block > 0 OR request > 0;
set pages 50000 lines 32767
select object_name,s.inst_id,s.sid,s.serial#,p.spid,s.osuser,s.program,s.server,s.machine,s.status from gv$locked_object l,gv$session s,gv$process p,dba_objects o where l.object_id=o.object_id and l.session_id=s.sid and s.paddr=p.addr;
set pages 50000 lines 32767
col OBJECT_NAME for a40
col USERNAME for a10
col LOCKED_MODE for a15
col OBJECT_OWNER for a15
col OS_USER_NAME for a12
SELECT b.inst_id,b.session_id AS sid,NVL(b.oracle_username, '(oracle)') AS username,a.owner AS object_owner,a.object_name,
Decode(b.locked_mode, 0, 'None',1, 'Null (NULL)',2, 'Row-S (SS)',3, 'Row-X (SX)',4, 'Share (S)',5, 'S/Row-X (SSX)',6, 'Exclusive (X)',
b.locked_mode) locked_mode,b.os_user_name FROM dba_objects a, gv$locked_object b WHERE a.object_id = b.object_id ORDER BY 1, 2, 3, 4;
Blocker Session and Waiting sessions
====================================
column Username format A15 column Sid format 9990 heading SID
column Type format A4 column Lmode format 990 heading 'HELD'
column Request format 990 heading 'REQ' column Id1 format 9999990
column Id2 format 9999990 break on Id1 skip 1 dup
SELECT SN.Username, M.Sid, M.Type,
DECODE(M.Lmode, 0, 'None', 1, 'Null', 2, 'Row Share', 3, 'Row
Excl.', 4, 'Share', 5, 'S/Row Excl.', 6, 'Exclusive',
LTRIM(TO_CHAR(Lmode,'990'))) Lmode,
DECODE(M.Request, 0, 'None', 1, 'Null', 2, 'Row Share', 3, 'Row
Excl.', 4, 'Share', 5, 'S/Row Excl.', 6, 'Exclusive',
LTRIM(TO_CHAR(M.Request, '990'))) Request,
M.Id1, M.Id2
FROM V$SESSION SN, V$LOCK M
WHERE (SN.Sid = M.Sid and M.Request ! = 0)
or (SN.Sid = M.Sid and M.Request = 0 and Lmode != 4 and (id1, id2)
in (select S.Id1, S.Id2 from V$LOCK S where Request != 0 and S.Id1
= M.Id1 and S.Id2 = M.Id2) ) order by Id1, Id2, M.Request;
USERNAME SID TY LMODE REQUEST ID1 ID2
---------------- ------- -- ------------- ------------- ---------- --------
ORAPLAYERS 10 TX Exclusive None 123456 200
ORAPLAYERS 100 TX None Exclusive 123456 200
Session 10 is blocking(LMODE=Exclusive)
Session 100 is waiting(REQUEST=Exclusive)
The meaning of ID1 and ID2 depends on the lock TYPE.
• We can see situations where a session is both a Blocker and a Waiter.
• If there are only two sessions and both are Blockers and Waiters then we got a deadlock situation (which Oracle will solve automatically).
To find waiters:
---------------
set pages 50000 lines 32767
col LOCK_TYPE for a10
col MODE_HELD for a10
col MODE_REQUESTED for a10
select * from dba_waiters;
WAITING_SESSION HOLDING_SESSION LOCK_TYPE MODE_HELD MODE_REQUESTED LOCK_ID1 LOCK_ID2
--------------- --------------- --------- --------- -------------- -------- --------
Blocking details:
----------------
set pages 50000 lines 32767
select distinct s1.username || '@' || s1.machine || ' ( INST=' || s1.inst_id || ' SID=' || s1.sid || ' ) is blocking ' || s2.username || '@' || s2.machine || ' ( INST=' || s1.inst_id || ' SID=' || s2.sid || ' ) ' as blocking_status from gv$lock l1, gv$session s1, gv$lock l2, gv$session s2 where s1.sid=l1.sid and s2.sid=l2.sid and l1.BLOCK=1 and l2.request > 0 and l1.id1 = l2.id1 and l2.id2 = l2.id2 and l1.inst_id = s1.inst_id;
set pages 50000 lines 32767
col BLOCKER for a20
col BLOCKEE for a20
select (select username from v$session where sid = a.sid ) blocker,a.sid, 'is blocking ',(select username from v$session where sid =b.sid) blockee,b.sid from v$lock a, v$lock b where a.block =1 and b.request > 0 and a.id1 = b.id1 and a.id2 = b.id2;
BLOCKER SID 'ISBLOCKING' BLOCKEE SID
------- ---------- ---------- ------- --------
set pages 50000 lines 32767
select blocking_session, sid, serial#, wait_class,seconds_in_wait, username, osuser, program, logon_time from v$session where blocking_session is not NULL order by 1;
9. Check for alerts in OEM :-
============================
Login to Oracle Enterprise Manager with valid username and password
click on "Alerts" tab
then select the below tabs one by one to see the alerts generated
Targets Down/Critical/Warning/Errors/
1. Check the Database details
2. Monitor the consumption of resources
3. Check the Alert Log
4. Check Listener log
5. Check Filesystem space Usage
6. Generate AWR Report
7. Generate ADDM Report
8. Finding Locks,Blocker Session and Waiting sessions in a oracle database
9. Check for alerts in OEM
1. Check the Database details :-
=============================
set pages 9999 lines 300
col OPEN_MODE for a10
col HOST_NAME for a30
select name DB_NAME,HOST_NAME,DATABASE_ROLE,OPEN_MODE,version DB_VERSION,LOGINS,to_char(STARTUP_TIME,'DD-MON-YYYY HH24:MI:SS') "DB UP TIME" from v$database,gv$instance;
For RAC:
-------
set pages 9999 lines 300
col OPEN_MODE for a10
col HOST_NAME for a30
select INST_ID,INSTANCE_NAME, name DB_NAME,HOST_NAME,DATABASE_ROLE,OPEN_MODE,version DB_VERSION,LOGINS,to_char(STARTUP_TIME,'DD-MON-YYYY HH24:MI:SS') "DB UP TIME" from v$database,gv$instance;
2. Monitor the consumption of resources :-
=======================================
select * from v$resource_limit where resource_name in ('processes','sessions');
The v$session views shows current sessions (which change rapidly),
while the v$resource_limit shows the current and maximum global resource utilization for some system resources.
3. Check the Alert Log :-
======================
$locate alert_<ORACLE_SID>
--- OR ---
UNIX/Linux command to locate the alert log file
-----------------------------------------------
$ find / -name 'alert_*.log' 2> /dev/null
vi <alert_log_location_of_the_above_output>
shift+g
?ORA- ---> press enter key
press 'n' to check backwards/up side and 'N' for forward/down side search.
:q! --and press enter, for exiting vi editor
--- OR ---
11G
===
$ sqlplus "/as sysdba"
set pages 9999 lines 300
col NAME for a15
col VALUE for a60
select name, value from v$diag_info where name = 'Diag Trace';
On a server with multiple instances, each instance will have it's own background_dump_dest in $ORACLE_HOME/diag/$ORACLE_SID/trace directory
Before 11G
==========
$ sqlplus "/as sysdba"
set pages 9999 lines 300
show parameter BACKGROUND_DUMP_DEST;
On a server with multiple instances, each instance will have it's own background_dump_dest in $ORACLE_HOME/admin/$ORACLE_SID/bdump directory
4. Check Listener log :-
=====================
$locate listener.log
--- OR ---
UNIX/Linux command to locate the listener log file
--------------------------------------------------
$ find / -name 'listener.log' 2> /dev/null
vi <listener.log>
shift+g
?TNS- ---> press enter key
press 'n' to check backwords and 'N' for forword search.
AND
shift+g
?error ---> press enter key
press 'n' to check backwords and 'N' for forword search.
:q! --and press enter, for exiting vi editor
--- OR ---
$lsnrctl status
from the output you can get the listener log location (see the value for "Listener Log File" in the output).
5. Check Filesystem space Usage :-
===============================
df -h (Linux / UNIX)
df -g (AIX)
6. Generate AWR Report :-
======================
Generate AWR report for current and before to compare
SQL> @?/rdbms/admin/awrrpt.sql (For RAC, @?/rdbms/admin/awrrpti.sql - for each instance)
If Required,
SQL> @?/rdbms/admin/awrddrpt.sql ----> Produces Workload Repository Compare Periods Report
7. Generate ADDM Report :-
=======================
Generate ADDM report for current and before to compare.
ADDM report provides Findings and Recommendations to fix the issue.
SQL> @?/rdbms/admin/addmrpt.sql (For RAC, @?/rdbms/admin/addmrpti.sql - for each instance)
8. Finding Locks,Blocker Session and Waiting sessions in a oracle database :-
========================================================================
Select * from v$lock;
Select * from gv_$lock; (For RAC)
A fast way to check blocking/waiting situations
-----------------------------------------------
SELECT * FROM v$lock WHERE block > 0 OR request > 0;
set pages 50000 lines 32767
select object_name,s.inst_id,s.sid,s.serial#,p.spid,s.osuser,s.program,s.server,s.machine,s.status from gv$locked_object l,gv$session s,gv$process p,dba_objects o where l.object_id=o.object_id and l.session_id=s.sid and s.paddr=p.addr;
set pages 50000 lines 32767
col OBJECT_NAME for a40
col USERNAME for a10
col LOCKED_MODE for a15
col OBJECT_OWNER for a15
col OS_USER_NAME for a12
SELECT b.inst_id,b.session_id AS sid,NVL(b.oracle_username, '(oracle)') AS username,a.owner AS object_owner,a.object_name,
Decode(b.locked_mode, 0, 'None',1, 'Null (NULL)',2, 'Row-S (SS)',3, 'Row-X (SX)',4, 'Share (S)',5, 'S/Row-X (SSX)',6, 'Exclusive (X)',
b.locked_mode) locked_mode,b.os_user_name FROM dba_objects a, gv$locked_object b WHERE a.object_id = b.object_id ORDER BY 1, 2, 3, 4;
Blocker Session and Waiting sessions
====================================
column Username format A15 column Sid format 9990 heading SID
column Type format A4 column Lmode format 990 heading 'HELD'
column Request format 990 heading 'REQ' column Id1 format 9999990
column Id2 format 9999990 break on Id1 skip 1 dup
SELECT SN.Username, M.Sid, M.Type,
DECODE(M.Lmode, 0, 'None', 1, 'Null', 2, 'Row Share', 3, 'Row
Excl.', 4, 'Share', 5, 'S/Row Excl.', 6, 'Exclusive',
LTRIM(TO_CHAR(Lmode,'990'))) Lmode,
DECODE(M.Request, 0, 'None', 1, 'Null', 2, 'Row Share', 3, 'Row
Excl.', 4, 'Share', 5, 'S/Row Excl.', 6, 'Exclusive',
LTRIM(TO_CHAR(M.Request, '990'))) Request,
M.Id1, M.Id2
FROM V$SESSION SN, V$LOCK M
WHERE (SN.Sid = M.Sid and M.Request ! = 0)
or (SN.Sid = M.Sid and M.Request = 0 and Lmode != 4 and (id1, id2)
in (select S.Id1, S.Id2 from V$LOCK S where Request != 0 and S.Id1
= M.Id1 and S.Id2 = M.Id2) ) order by Id1, Id2, M.Request;
USERNAME SID TY LMODE REQUEST ID1 ID2
---------------- ------- -- ------------- ------------- ---------- --------
ORAPLAYERS 10 TX Exclusive None 123456 200
ORAPLAYERS 100 TX None Exclusive 123456 200
Session 10 is blocking(LMODE=Exclusive)
Session 100 is waiting(REQUEST=Exclusive)
The meaning of ID1 and ID2 depends on the lock TYPE.
• We can see situations where a session is both a Blocker and a Waiter.
• If there are only two sessions and both are Blockers and Waiters then we got a deadlock situation (which Oracle will solve automatically).
To find waiters:
---------------
set pages 50000 lines 32767
col LOCK_TYPE for a10
col MODE_HELD for a10
col MODE_REQUESTED for a10
select * from dba_waiters;
WAITING_SESSION HOLDING_SESSION LOCK_TYPE MODE_HELD MODE_REQUESTED LOCK_ID1 LOCK_ID2
--------------- --------------- --------- --------- -------------- -------- --------
Blocking details:
----------------
set pages 50000 lines 32767
select distinct s1.username || '@' || s1.machine || ' ( INST=' || s1.inst_id || ' SID=' || s1.sid || ' ) is blocking ' || s2.username || '@' || s2.machine || ' ( INST=' || s1.inst_id || ' SID=' || s2.sid || ' ) ' as blocking_status from gv$lock l1, gv$session s1, gv$lock l2, gv$session s2 where s1.sid=l1.sid and s2.sid=l2.sid and l1.BLOCK=1 and l2.request > 0 and l1.id1 = l2.id1 and l2.id2 = l2.id2 and l1.inst_id = s1.inst_id;
set pages 50000 lines 32767
col BLOCKER for a20
col BLOCKEE for a20
select (select username from v$session where sid = a.sid ) blocker,a.sid, 'is blocking ',(select username from v$session where sid =b.sid) blockee,b.sid from v$lock a, v$lock b where a.block =1 and b.request > 0 and a.id1 = b.id1 and a.id2 = b.id2;
BLOCKER SID 'ISBLOCKING' BLOCKEE SID
------- ---------- ---------- ------- --------
set pages 50000 lines 32767
select blocking_session, sid, serial#, wait_class,seconds_in_wait, username, osuser, program, logon_time from v$session where blocking_session is not NULL order by 1;
9. Check for alerts in OEM :-
============================
Login to Oracle Enterprise Manager with valid username and password
click on "Alerts" tab
then select the below tabs one by one to see the alerts generated
Targets Down/Critical/Warning/Errors/
How to check RMAN backup job status in Oracle using v$rman_backup_job_details
RMAN backup job details for 'n' number of days:-
=========================================
Monitoring RMAN backup status using v$rman_backup_job_details and v$rman_status.
Note : - Enter the number of days required for status report, for 1 day backup status report provide input as '1'.
RMAN backup status using v$rman_backup_job_details :-
set pages 9999 lines 500
col INSTANCE for a9
col ELAPSED for a30
SELECT ( SELECT instance_name FROM v$instance)
|| ' '
|| ( SELECT instance_number FROM v$instance)
instance,
-- TO_CHAR (start_time, 'YYYY-MM-DD HH24:MI') start_time,
to_date (start_time, 'DD-MM-YYYY HH24:MI:SS') start_time,
TO_CHAR (output_bytes / 1048576, '999,999,999.9') output_mb,
TO_CHAR (output_bytes_per_sec / 1048576, '999,999.9') output_mb_per_sec,
time_taken_display elapsed,input_type,status
FROM v$rman_backup_job_details
where start_time >= sysdate - &NUMBER_OF_DAYS
ORDER BY start_time
/
RMAN backup status using v$rman_backup_job_details , v$rman_status:-
set pages 9999 lines 500
set numformat 99999.99
set trim on
set trims on
alter session set nls_date_format = 'DD-MM-YYYY HH24:MI:SS';
col INSTANCE for a9
col status for a22
col COMMAND_ID for a20
col INPUT_TYPE for a10
col OUTPUT_DEVICE_TYPE for a10
col OUTPUT_BYTES_PER_SEC_DISPLAY for a9
col status heading "BACKUP|STATUS"
col COMMAND_ID heading "BACKUP NAME"
col STARTED_TIME heading "START TIME"
COL END_TIME heading "END TIME"
col ELAPSED_TIME heading "MINUTES | TAKEN"
col INPUT_TYPE heading "INPUT|TYPE"
col OUTPUT_DEVICE_TYPE heading "OUTPUT|DEVICES"
col INPUT_SIZE heading "INPUT SIZE|GB"
col OUTPUT_SIZE heading "OUTPUT SIZE|GB"
col OUTPUT_BYTES_PER_SEC_DISPLAY heading "OUTPUT | RATE|(PER SEC)"
SELECT (SELECT instance_name FROM v$instance) || ' ' || (SELECT instance_number FROM v$instance) instance,rs.sid,
rj.COMMAND_ID,
rj.STATUS,
max(rj.START_TIME) STARTED_TIME,
rj.END_TIME,
rj.ELAPSED_SECONDS/60 ELAPSED_TIME,
rj.INPUT_TYPE,
rj.OUTPUT_DEVICE_TYPE,
rj.INPUT_BYTES/1024/1024/1024 INPUT_SIZE,
rj.OUTPUT_BYTES/1024/1024/1024 OUTPUT_SIZE,
rj.OUTPUT_BYTES_PER_SEC_DISPLAY
from v$rman_backup_job_details rj, v$rman_status rs
where rj.COMMAND_ID=rs.COMMAND_ID
group by rs.sid,rj.COMMAND_ID,rj.STATUS,rj.START_TIME,rj.END_TIME,rj.ELAPSED_SECONDS,rj.INPUT_TYPE,rj.OUTPUT_DEVICE_TYPE,rj.INPUT_BYTES,rj.OUTPUT_BYTES,rj.OUTPUT_BYTES_PER_SEC_DISPLAY
having max(rj.START_TIME) > sysdate-&NUMBER_OF_DAYS order by rj.START_TIME desc
/
BACKUP MINUTES INPUT OUTPUT INPUT SIZE OUTPUT SIZE OUTPUT RATE
INSTANCE SID BACKUP NAME STATUS START TIME END TIME TAKEN TYPE DEVICES GB GB (PER SEC)
--------- --- -------------------- ---------------------- ------------------- ------------------- --------- ---------- ---------- ---------- ----------- ------------
To get the job details for a specific backup job, use the following query:-
set lines 220
set pages 1000
col cf for 9,999
col df for 9,999
col elapsed_seconds heading "ELAPSED|SECONDS"
col i0 for 9,999
col i1 for 9,999
col l for 9,999
col output_mbytes for 9,999,999 heading "OUTPUT|MBYTES"
col session_recid for 999999 heading "SESSION|RECID"
col session_stamp for 99999999999 heading "SESSION|STAMP"
col status for a10 trunc
col time_taken_display for a10 heading "TIME|TAKEN"
col output_instance for 9999 heading "OUT|INST"
select
j.session_recid, j.session_stamp,
to_char(j.start_time, 'yyyy-mm-dd hh24:mi:ss') start_time,
to_char(j.end_time, 'yyyy-mm-dd hh24:mi:ss') end_time,
(j.output_bytes/1024/1024) output_mbytes, j.status, j.input_type,
decode(to_char(j.start_time, 'd'), 1, 'Sunday', 2, 'Monday',
3, 'Tuesday', 4, 'Wednesday',
5, 'Thursday', 6, 'Friday',
7, 'Saturday') dow,
j.elapsed_seconds, j.time_taken_display,
x.cf, x.df, x.i0, x.i1, x.l,
ro.inst_id output_instance
from V$RMAN_BACKUP_JOB_DETAILS j
left outer join (select
d.session_recid, d.session_stamp,
sum(case when d.controlfile_included = 'YES' then d.pieces else 0 end) CF,
sum(case when d.controlfile_included = 'NO'
and d.backup_type||d.incremental_level = 'D' then d.pieces else 0 end) DF,
sum(case when d.backup_type||d.incremental_level = 'D0' then d.pieces else 0 end) I0,
sum(case when d.backup_type||d.incremental_level = 'I1' then d.pieces else 0 end) I1,
sum(case when d.backup_type = 'L' then d.pieces else 0 end) L
from
V$BACKUP_SET_DETAILS d
join V$BACKUP_SET s on s.set_stamp = d.set_stamp and s.set_count = d.set_count
where s.input_file_scan_only = 'NO'
group by d.session_recid, d.session_stamp) x
on x.session_recid = j.session_recid and x.session_stamp = j.session_stamp
left outer join (select o.session_recid, o.session_stamp, min(inst_id) inst_id
from GV$RMAN_OUTPUT o
group by o.session_recid, o.session_stamp)
ro on ro.session_recid = j.session_recid and ro.session_stamp = j.session_stamp
where j.start_time > trunc(sysdate)-&NUMBER_OF_DAYS
order by j.start_time;
Where,
CF: Number of controlfile backups included in the backup set
DF: Number of datafile full backups included in the backup set
I0: Number of datafile incremental level-0 backups included in the backup set
I1: Number of datafile incremental level-1 backups included in the backup set
L: Number of archived log backups included in the backup set
Backup set details : -
To get the Backup set details for a specific backup job, identified by the (SESSION_RECID, SESSION_STAMP) pair, use the following query:
set lines 220
set pages 1000
col backup_type for a4 heading "TYPE"
col controlfile_included heading "CF?"
col incremental_level heading "INCR LVL"
col pieces for 999 heading "PCS"
col elapsed_seconds heading "ELAPSED|SECONDS"
col device_type for a10 trunc heading "DEVICE|TYPE"
col compressed for a4 heading "ZIP?"
col output_mbytes for 9,999,999 heading "OUTPUT|MBYTES"
col input_file_scan_only for a4 heading "SCAN|ONLY"
select
d.bs_key, d.backup_type, d.controlfile_included, d.incremental_level, d.pieces,
to_char(d.start_time, 'yyyy-mm-dd hh24:mi:ss') start_time,
to_char(d.completion_time, 'yyyy-mm-dd hh24:mi:ss') completion_time,
d.elapsed_seconds, d.device_type, d.compressed, (d.output_bytes/1024/1024) output_mbytes, s.input_file_scan_only
from V$BACKUP_SET_DETAILS d
join V$BACKUP_SET s on s.set_stamp = d.set_stamp and s.set_count = d.set_count
where session_recid = &SESSION_RECID
and session_stamp = &SESSION_STAMP
order by d.start_time;
Backup job output :-
To get the Backup job output for a specific backup job, identified by the (SESSION_RECID, SESSION_STAMP) pair, use the following query:
set lines 200
set pages 1000
select output
from GV$RMAN_OUTPUT
where session_recid = &SESSION_RECID
and session_stamp = &SESSION_STAMP
order by recid;
Subscribe to:
Posts (Atom)