How to fix the Oracle error TNS-00537: Index into protocol adapter table is out of legal range?

In this post, you’ll learn more about the Oracle ErrorTNS-00537: Index into protocol adapter table is out of legal range with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

TNS-00537: Index into protocol adapter table is out of legal range

Reason for the Error TNS-00537: Index into protocol adapter table is out of legal range

Cause: Internal protocol adapter error.

How to fix the Error TNS-00537: Index into protocol adapter table is out of legal range ?

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

Action: For further details, turn on tracing and reexecute the operation. If error persists, contact Oracle Customer Support.