How to fix the Oracle error ORA-09766: osnmop: buffer allocation failure.?

In this post, you’ll learn more about the Oracle ErrorORA-09766: osnmop: buffer allocation failure. with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-09766: osnmop: buffer allocation failure.

Reason for the Error ORA-09766: osnmop: buffer allocation failure.

The Mach driver failed to allocate enough vm space for its I/O buffers.

How to fix the Error ORA-09766: osnmop: buffer allocation failure. ?

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

Decrease the value of buffer_size parameter in the Two-Task driver hoststring.