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/**********************************************************************
* File: locks.sql
* Type: SQL*Plus script
* Author: Tim Gorman (Evergreen Database Technologies, Inc.)
* Date: 29-Nov-99
*
* Description:
* Query the V$LOCK view and decode the following columns:
* TYPE
* LMODE
* REQUEST
* Also, summarize by these columns...
*
* Enqueue type-names are a composite of Oracle7, Oracle8, and
* Oracle8i documentation. It is up-to-date as of v8.1.5 and
* should be valid going back to v7.3.x...
*
* Modifications:
*********************************************************************/
col type format a40 truncate heading "Lock Type"
col mode_held format a14 truncate heading "Mode Held"
col mode_requested format a14 truncate heading "Mode Requested"
col cnt format 9990 heading "#Sess"
col instance new_value V_INSTANCE noprint
set feedback off echo off timing off pause off verify off
select lower(replace(t.instance,chr(0),'')) instance
from v$thread t,
v$parameter p
where p.name = 'thread'
and t.thread# = to_number(decode(p.value,'0','1',p.value));
SELECT TYPE ||
DECODE(TYPE,
'BL',': Buffer hash table',
'CF',': Control File Transaction',
'CI',': Cross Instance Call',
'CS',': Control File Schema',
'CU',': Bind Enqueue',
'DF',': Data File',
'DL',': Direct-loader index-creation',
'DM',': Mount/startup db primary/secondary instance',
'DR',': Distributed Recovery Process',
'DX',': Distributed Transaction Entry',
'FI',': SGA Open-File Information',
'FS',': File Set',
'IN',': Instance Number',
'IR',': Instance Recovery Serialization',
'IS',': Instance State',
'IV',': Library Cache InValidation',
'JQ',': Job Queue',
'KK',': Redo Log "Kick"',
'LS',': Log Start/Log Switch',
'MB',': Master Buffer hash table',
'MM',': Mount Definition',
'MR',': Media Recovery',
'PF',': Password File',
'PI',': Parallel Slaves',
'PR',': Process Startup',
'PS',': Parallel Slaves Synchronization',
'RE',': USE_ROW_ENQUEUE Enforcement',
'RT',': Redo Thread',
'RW',': Row Wait',
'SC',': System Commit Number',
'SH',': System Commit Number HWM',
'SM',': SMON',
'SQ',': Sequence Number',
'SR',': Synchronized Replication',
'SS',': Sort Segment',
'ST',': Space Transaction',
'SV',': Sequence Number Value',
'TA',': Transaction Recovery',
'TD',': DDL enqueue',
'TE',': Extend-segment enqueue',
'TM',': DML enqueue',
'TS',': Temporary Segment',
'TT',': Temporary Table',
'TX',': Transaction',
'UL',': User-defined Lock',
'UN',': User Name',
'US',': Undo Segment Serialization',
'WL',': Being-written redo log instance',
'WS',': Write-atomic-log-switch global enqueue',
'XA',': Instance Attribute',
'XI',': Instance Registration',
decode(substr(type,1,1),
'L', ': Library Cache ('||substr(type,2,1)||')',
'N', ': Library Cache Pin ('||substr(type,2,1)||')',
'Q', ': Row Cache ('||substr(type,2,1)||')',
': ????')) type,
DECODE(LMODE,
0, '--Waiting--',
1, 'Null',
2, 'Sub-Share',
3, 'Sub-Exclusive',
4, 'Share',
5, 'Share/Sub-Excl',
6, 'Exclusive',
'<Unknown>') mode_held,
DECODE(REQUEST,
0, '',
1, 'Null',
2, 'Sub-Share',
3, 'Sub-Exclusive',
4, 'Share',
5, 'Share/Sub-Excl',
6, 'Exclusive',
'<Unknown>') mode_requested,
COUNT(*) cnt
FROM GV$LOCK
WHERE TYPE NOT IN ('MR','RT')
GROUP BY TYPE ||
DECODE(TYPE,
'BL',': Buffer hash table',
'CF',': Control File Transaction',
'CI',': Cross Instance Call',
'CS',': Control File Schema',
'CU',': Bind Enqueue',
'DF',': Data File',
'DL',': Direct-loader index-creation',
'DM',': Mount/startup db primary/secondary instance',
'DR',': Distributed Recovery Process',
'DX',': Distributed Transaction Entry',
'FI',': SGA Open-File Information',
'FS',': File Set',
'IN',': Instance Number',
'IR',': Instance Recovery Serialization',
'IS',': Instance State',
'IV',': Library Cache InValidation',
'JQ',': Job Queue',
'KK',': Redo Log "Kick"',
'LS',': Log Start/Log Switch',
'MB',': Master Buffer hash table',
'MM',': Mount Definition',
'MR',': Media Recovery',
'PF',': Password File',
'PI',': Parallel Slaves',
'PR',': Process Startup',
'PS',': Parallel Slaves Synchronization',
'RE',': USE_ROW_ENQUEUE Enforcement',
'RT',': Redo Thread',
'RW',': Row Wait',
'SC',': System Commit Number',
'SH',': System Commit Number HWM',
'SM',': SMON',
'SQ',': Sequence Number',
'SR',': Synchronized Replication',
'SS',': Sort Segment',
'ST',': Space Transaction',
'SV',': Sequence Number Value',
'TA',': Transaction Recovery',
'TD',': DDL enqueue',
'TE',': Extend-segment enqueue',
'TM',': DML enqueue',
'TS',': Temporary Segment',
'TT',': Temporary Table',
'TX',': Transaction',
'UL',': User-defined Lock',
'UN',': User Name',
'US',': Undo Segment Serialization',
'WL',': Being-written redo log instance',
'WS',': Write-atomic-log-switch global enqueue',
'XA',': Instance Attribute',
'XI',': Instance Registration',
decode(substr(type,1,1),
'L', ': Library Cache ('||substr(type,2,1)||')',
'N', ': Library Cache Pin ('||substr(type,2,1)||')',
'Q', ': Row Cache ('||substr(type,2,1)||')',
': ????')),
DECODE(LMODE,
0, '--Waiting--',
1, 'Null',
2, 'Sub-Share',
3, 'Sub-Exclusive',
4, 'Share',
5, 'Share/Sub-Excl',
6, 'Exclusive',
'<Unknown>'),
DECODE(REQUEST,
0, '',
1, 'Null',
2, 'Sub-Share',
3, 'Sub-Exclusive',
4, 'Share',
5, 'Share/Sub-Excl',
6, 'Exclusive',
'<Unknown>')
spool locks_&&V_INSTANCE
/
spool off