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Just thought I'd keep anybody who's interested up-to-date wiuth this problem.
Oracle support have suggested that cause of the problem is a heap corrution caused when the SGA was dynamically shrunk. This was backed up by the fact that later in the day the instance completely froze had had to be manually killed (kill the processes). Once the instance restarted the problem disappeared.
extract from the TAR
Explained this make sense in a way as we may have lost a memory address during the resizing and therefore the heap manager lost track of its work, thus ORA-7445 was reported.
* This could be bug 2621310, but the call stack does not match completely and I am not seeing child latches blocking each other
* Bug 2713652 looks similar, but we are not failing in strncpy, so again maybe only similar, but not the same
* I cannot say this is one or the other bug, but it is definitely some sort of heap problem
Has anyone else had these sorts of issues when changing the size of the SGA dynamincally?
Last edited by jovery; 03-17-2003 at 07:10 AM.
Jim
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