110 lines
5.1 KiB
SQL
110 lines
5.1 KiB
SQL
-- +----------------------------------------------------------------------------+
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-- | Jeffrey M. Hunter |
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-- | jhunter@idevelopment.info |
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-- | www.idevelopment.info |
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-- |----------------------------------------------------------------------------|
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-- | Copyright (c) 1998-2012 Jeffrey M. Hunter. All rights reserved. |
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-- |----------------------------------------------------------------------------|
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-- | DATABASE : Oracle |
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-- | FILE : sess_waiting.sql |
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-- | CLASS : Session Management |
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-- | PURPOSE : This script produces a report of the top sessions that have |
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-- | waited (the entries at top have waited the longest) for |
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-- | non-idle wait events (event column). The Oracle Server |
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-- | Reference Manual can be used to further diagnose the wait event |
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-- | (along with its parameters). Metalink can also be used by |
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-- | supplying the event name in the search bar. |
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-- | |
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-- | The INST_ID column shows the instance where the session resides |
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-- | and the SID is the unique identifier for the session |
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-- | (gv$session). The p1, p2, and p3 columns will show event |
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-- | specific information that may be important to debug the |
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-- | problem. |
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-- | EXAMPLE : For example, you can search Metalink by supplying the event |
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-- | METALINK : name (surrounded by single quotes) as in the following example: |
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-- | SEARCH : |
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-- | [ 'Sync ASM rebalance' ] |
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-- | NOTE : As with any code, ensure to test this script in a development |
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-- | environment before attempting to run it in production. |
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-- +----------------------------------------------------------------------------+
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SET TERMOUT OFF;
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COLUMN current_instance NEW_VALUE current_instance NOPRINT;
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SELECT rpad(instance_name, 17) current_instance FROM v$instance;
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SET TERMOUT ON;
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PROMPT
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PROMPT +------------------------------------------------------------------------+
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PROMPT | Report : Session Waits |
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PROMPT | Instance : ¤t_instance |
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PROMPT +------------------------------------------------------------------------+
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SET ECHO OFF
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SET FEEDBACK 6
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SET HEADING ON
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SET LINESIZE 180
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SET PAGESIZE 50000
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SET TERMOUT ON
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SET TIMING OFF
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SET TRIMOUT ON
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SET TRIMSPOOL ON
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SET VERIFY OFF
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CLEAR COLUMNS
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CLEAR BREAKS
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CLEAR COMPUTES
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COLUMN instance_name FORMAT a9 HEADING 'Instance'
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COLUMN sid FORMAT 999999 HEADING 'SID'
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COLUMN serial_id FORMAT 99999999 HEADING 'Serial ID'
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COLUMN session_status FORMAT a9 HEADING 'Status'
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COLUMN oracle_username FORMAT a20 HEADING 'Oracle User'
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COLUMN state FORMAT a8 HEADING 'State'
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COLUMN event FORMAT a25 HEADING 'Event'
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COLUMN wait_time_sec FORMAT 999,999,999 HEADING 'Wait Time (sec)'
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COLUMN last_sql FORMAT a45 HEADING 'Last SQL'
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SELECT
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i.instance_name instance_name
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, s.sid sid
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, s.serial# serial_id
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, s.username oracle_username
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, sw.state state
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, sw.event event
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, sw.seconds_in_wait wait_time_sec
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, sa.sql_text last_sql
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FROM
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gv$session_wait sw
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, gv$session s
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, gv$sqlarea sa
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, gv$instance i
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WHERE
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sw.event NOT IN ( 'rdbms ipc message'
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, 'smon timer'
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, 'pmon timer'
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, 'SQL*Net message from client'
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, 'lock manager wait for remote message'
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, 'ges remote message'
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, 'gcs remote message'
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, 'gcs for action'
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, 'client message'
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, 'pipe get'
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, 'null event'
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, 'PX Idle Wait'
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, 'single-task message'
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, 'PX Deq: Execution Msg'
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, 'KXFQ: kxfqdeq - normal deqeue'
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, 'listen endpoint status'
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, 'slave wait'
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, 'wakeup time manager'
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)
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AND sw.seconds_in_wait > 0
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AND sw.inst_id = s.inst_id
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AND sw.sid = s.sid
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AND s.inst_id = sa.inst_id
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AND s.sql_address = sa.address
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AND s.inst_id = i.inst_id
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ORDER BY
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wait_time_sec DESC
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, i.instance_name;
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