How to fix the Oracle error ORA-12201: TNS:encountered too small a connection buffer?

In this post, you’ll learn more about the Oracle ErrorORA-12201: TNS:encountered too small a connection buffer with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-12201: TNS:encountered too small a connection buffer

Reason for the Error ORA-12201: TNS:encountered too small a connection buffer

TNS connection buffer supplied by the application was too small to retrieve the data sent back.

How to fix the Error ORA-12201: TNS:encountered too small a connection buffer ?

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

Supply a larger connection buffer. If problem persists, call Worldwide Customer Support.