How to fix the Oracle error ORA-37159: C++ virtual table addresses become invalid due to session migration in shared server mode.?

In this post, you’ll learn more about the Oracle ErrorORA-37159: C++ virtual table addresses become invalid due to session migration in shared server mode. with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

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

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

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.

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

You can fix this error in Oracle by following the below steps

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