Hitting ORA-600 [kcblasm_1] in 10.2.0.5:
In the ALERT:
The call stack in the generated tracefiles looks similar to:
This problem is hit only in 10.2.0.5, up to PSU 10.2.0.5.4 in which problem is fixed.
Problem is affecting 10.2.0.5 to 10.2.0.5.3.
This is is a known and common problem hit in 10.2.0.5, investigated and corrected in unpublished Bug 7612454.
The problem was introduced in 10.2.0.5, by the fix of Bug:7523755.
This has been corrected in PSU 10.2.0.5.4 and 11.2.
To quickest way to the solution of this problem is to apply PSU 10.2.0.5.4, Patch 12419392 or later.
All alternative solutions for this problem are listed below:
It is possible to hit ORA-600 [kcblasm_1] in 10.2.0.4 or 184.108.40.206 if an early version of the one-off Patch 7523755 was applied.
The problem patch Patch 7523755 was quickly removed and a correct version of the patch is since long available for download at MOS.
For details of the problem of hitting ORA-600 [kcblasm_1] in 10.2.0.4 or 220.127.116.11, please take part of Document 849381.1.
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