How to fix the Oracle error ORA-09879: sstascre/sstasat: shmat error, unable to attach tas read page?

In this post, you’ll learn more about the Oracle ErrorORA-09879: sstascre/sstasat: shmat error, unable to attach tas read page with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-09879: sstascre/sstasat: shmat error, unable to attach tas read page

Reason for the Error ORA-09879: sstascre/sstasat: shmat error, unable to attach tas read page

Error in shmat.

How to fix the Error ORA-09879: sstascre/sstasat: shmat error, unable to attach tas read page ?

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

Check errno returned.Verify that enough shared memory is available on the system.