need some help with a bug
- From: Andrew Kerber <andrew.kerber@xxxxxxxxx>
- To: ORACLE-L <oracle-l@xxxxxxxxxxxxx>
- Date: Wed, 3 Aug 2011 10:51:39 -0500
We are getting hit in 11.2.0.2 on Sun-sparc 64 with behavior that appears to
be caused by a bug that was supposed to have been fixed in 11.2.0.2. The
bug is described below. Bug number is 9577583. Has anyone seen this or
have a work around? Right now we are flushing our shared pool about every 5
minutes to work around it. We have a sev 1 sr open with Oracle, but this is
the third day with no solution from them so far.
*Description*
ORA-942, or other unexpected errors, can occur when running in a setup
where multiple schemas have identical objects and users are only expected
to access objects in their own schemas.
The problem can cause a SQL built for a given user to incorrectly
have dependency / translation / access table entries for other
users objects:
- If there is no permission on those objects then various errors can occur.
- If the current user does have permission on those objects then SQL may
execute using objects from the wrong schema leading to wrong results
or logical data corruption.
This problem can also lead to various dumps when executing PLSQL
especially when the PLSQL is executed from RMAN or Internal Errors
due to memory corruptions.
Rediscovery Notes:
A library_cache dump of the problem cursor shows that the child
cursor has incorrect entries in the dependency table.
--
Andrew W. Kerber
'If at first you dont succeed, dont take up skydiving.'
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