How to fix the Oracle error TNS-12602: TNS: Connection Pooling limit reached?

In this post, you’ll learn more about the Oracle ErrorTNS-12602: TNS: Connection Pooling limit reached with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

TNS-12602: TNS: Connection Pooling limit reached

Reason for the Error TNS-12602: TNS: Connection Pooling limit reached

Cause: The operation failed because maximum active current connections has been reached. It may not be a real error when the Connection Pooling feature is enabled. It is possible that the application later reissues the operation and successfully grabs the connection pool slot and proceeds.

How to fix the Error TNS-12602: TNS: Connection Pooling limit reached ?

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

Action: This is an internal error. Enable tracing and attempt to repeat the error. If it occurs again, contact Oracle Customer Support.