OracleRecipes __ Monitor Long Running Oracle Operations

oracle recipes Problem Want to know how long you have to wait until the operation finishes? Sometimes when you run a slow query which produces a full table scan, you'll have to know how long it's going to take for the query to finish. There's a simple query which shows you how many seconds elapsed and how many seconds you'll have to wait. Recipe #1 Get details about long running operations Run the following query and you'll get most information you need: SELECT osuser, sl.sql_id, sl.sql_hash_value, opname, target, elapsed_seconds, time_remaining FROM v$session_longops sl inner join v$session s ON sl.SID = s.SID AND sl.SERIAL# = s.SERIAL# WHERE time_remaining > 0 Recipe #2 Show long running SQL Statements If you also want to see the SQL query causing the long running operation, just join v$sql like show below: SELECT s.username, sl.sid, sq.executions, sl.last_update_time, sl.sql_id, sl.sql_hash_value, opname, target, elapsed_seconds, time_remaining, sq.sql_fulltext FROM v$session_longops sl INNER JOIN v$sql sq ON sq.sql_id = sl.sql_id INNER JOIN v$session s ON sl.SID = s.SID AND sl.serial# = s.serial# WHERE time_remaining > 0

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Transcript of OracleRecipes __ Monitor Long Running Oracle Operations

3/27/2015 OracleRecipes::MonitorlongrunningOracleoperations

http://www.oraclerecipes.com/monitoring/monitorlongrunningoracleoperations/ 1/2

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ProblemWanttoknowhowlongyouhavetowaituntiltheoperationfinishes?Sometimeswhenyourunaslowquerywhichproducesafulltablescan,you'llhavetoknowhowlongit'sgoingtotakeforthequerytofinish.There'sasimplequerywhichshowsyouhowmanysecondselapsedandhowmanysecondsyou'llhavetowait.

Recipe#1GetdetailsaboutlongrunningoperationsRunthefollowingqueryandyou'llgetmostinformationyouneed:

SELECTosuser,sl.sql_id,sl.sql_hash_value,opname,target,elapsed_seconds,time_remainingFROMv$session_longopsslinnerjoinv$sessionsONsl.SID=s.SIDANDsl.SERIAL#=s.SERIAL#WHEREtime_remaining>0

Recipe#2ShowlongrunningSQLStatementsIfyoualsowanttoseetheSQLquerycausingthelongrunningoperation,justjoinv$sqllikeshowbelow:

SELECTs.username,sl.sid,sq.executions,sl.last_update_time,sl.sql_id,sl.sql_hash_value,opname,target,elapsed_seconds,time_remaining,sq.sql_fulltextFROMv$session_longopsslINNERJOINv$sqlsqONsq.sql_id=sl.sql_idINNERJOINv$sessionsONsl.SID=s.SIDANDsl.serial#=s.serial#WHEREtime_remaining>0
3/27/2015 OracleRecipes::MonitorlongrunningOracleoperations

http://www.oraclerecipes.com/monitoring/monitorlongrunningoracleoperations/ 2/2

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