How to fix the Oracle error TNS-12562: TNS:bad global handle?

In this post, you’ll learn more about the Oracle ErrorTNS-12562: TNS:bad global handle with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

TNS-12562: TNS:bad global handle

Reason for the Error TNS-12562: TNS:bad global handle

Cause: Internal error – bad ‘gbh’ argument passed to TNS from caller. System may have been linked with old libraries.

How to fix the Error TNS-12562: TNS:bad global handle ?

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

Action: Not normally visible to the user, contact Oracle Customer Support.