How to fix the Oracle error OCI-21521: exceeded maximum number of connections in OCI (object mode only)?

In this post, you’ll learn more about the Oracle ErrorOCI-21521: exceeded maximum number of connections in OCI (object mode only) with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

OCI-21521: exceeded maximum number of connections in OCI (object mode only)

Reason for the Error OCI-21521: exceeded maximum number of connections in OCI (object mode only)

User exceeded the maximum number of connections (255) that can be supported by an OCI environment in object mode.

How to fix the Error OCI-21521: exceeded maximum number of connections in OCI (object mode only) ?

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

Close some of existing and unused connections before opening more connections.