Hi Expert,

In my Production Database multiple Select/DML/DDL are execute parallel mode, sometimes i'm getting below error .

ORA-12805: parallel query server died unexpectedly

Could you please guide me how can i capture and fix the parallel processing error permanently .

Thanks in advance
MIHIR KAR#Hadoop #Oracle_DB #UNIX beginnerAsked:
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SujithData ArchitectCommented:
This issue can occur due to a variety of reasons.

Your system may not have enough resources to handle the degree of parallelism requested, And the process dies off in the OS. You need to review the degree of parallelism. Have a look at alert log if you see anything helpful. If your OS is experiencing resource constraints - you might need to fix it.

If you are using a high degree of parallelism, try to use  a lesser degree.

Some are some documented bugs in Oracle 11.1. Suggestion is to upgrade and apply a patch as in the link below -

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SujithData ArchitectCommented:
Thank You for closing the thread.

Did you get to the bottom of the issue and manage to address it?
Geert GOracle dbaCommented:
> to the bottom of the issue
probably not
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