![]() Using the below query you will get PID against SID in the oracle database. Of course it was something to related to performance issue I was observing. It was Streams AQ: enqueue blocked on low memory. In the Linux platform, every process has its process ID (PID) and a user can easily get PID from SID (Identify OS PID from SID). Then I thought of observing wait event for EXPDP master & slave processes. We want to find out OS PID against sid in the Oracle database to check the performance related to OS and Database. View On WordPress high water mark and low water mark in oracle high water mark in sql server high water mark oracle partition high water mark oracle truncate How do I change the high-water mark in Oracle? How do I find a high-water mark on my table? how to check high water mark in oracle tablespace how to resolve high water mark in oracle low water mark in oracle oracle shrink datafile high water mark What is high level watermark? What&039 s high and low-water marks? When we create a table in oracle the HWM is at starting position. ![]() In the Oracle database, the data is stored in blocks, and by default one block size is 8KB so you have a table with 10 extents (80K). How does HWM work in the oracle table, what is the High Water Mark? If you check the session, you’ll find it frequently waiting on Streams AQ: enqueue blocked on low memory, this is due to the BUG 27634991. OUI-67301: The following patches have conflicts. #ORACLEDBA #ORACLEATABASE #ORACLE article will learn how to reset the High Water Mark in the oracle table. Sometimes you might find your export job, out of nowhere, starts taking a lot to finish, like if it normally takes 2 hours to end after 5 hours is still running and it’s not even at half the job done. I get this warning applying Patch 21286665: EXPORT IS SLOW WAITING FOR 'STREAMS AQ: ENQUEUE BLOCKED ON LOW MEMORY' with OPatch 11.2.0.3.11 but the Patch finally didn't apply. I checked the wait event after that and I could not find such wait event, so I guessed the issue should be fixed.How to reset the High Water Mark in the oracle table. So I run statement in step 2 to complete it and I did begin to get value 0. ![]() ![]() I was surprised as we set the stream pool to 500M one day before and we still in the shrink action. I run the statement in step 1 and did get value 1. Will force to complete the stream pool shrink. 38 enqueue Streams AQ: enqueue blocked on low memory SQL> select component,currentsize/1024/1024,lastopertype,lastopertime from vsgadynamiccomponents Here we can see that streams pool got shrink-ed due to which it was in hung state.
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