How to fix the Oracle error ORA-24396: invalid attribute set in server handle?

In this post, you’ll learn more about the Oracle ErrorORA-24396: invalid attribute set in server handle with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-24396: invalid attribute set in server handle

Reason for the Error ORA-24396: invalid attribute set in server handle

Attribute OCI_ATTR_NONBLOCKING_MODE has been set on the server handle and attached in OCI_POOL mode. Connection pooling does not support non blocking mode.

How to fix the Error ORA-24396: invalid attribute set in server handle ?

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

Do not set the OCI_ATTR_NONBLOCKING_MODE attribute on the server handle while attaching in OCI_POOL mode.