Oracle Solution for Error ora-37159

ORA-37159: C++ virtual table addresses become invalid due to session migration in shared server mode.

What triggered the Error:

Exec-shield is the primary reason that caused this error in shared server mode. When exec-shield is turned on, there is no way to ensure that the C++ virtual table addresses are identical in all shared-server processes.

What should we do to fix it:

Set option _XSOLAPI_FIX_VPTRS to TRUE, restart the instance, and try again.