Bug 20675347: ORA-07445 [KGHSTACK_OVERFLOW_INTERNAL+644]
This problem was originally reported on the AIX platform, the main reason from the AIX compiler:
The bug is caused by an AIX compiler issue causing volatile variables in the Oracle kernel not to be handled properly.
Refer to MOS: 2003278.1, patch 20675347 to fix this problem.
Question: Do we need to apply this fix (20675347) before upgrading to 12C or we can upgrade directly 11.2.0.4.0 to 12.1.0.2 ?
means would like to know whether this bug fixed in 12c bundle or not?