In this post, you’ll learn more about the Oracle ErrorORA-02815: Unable to attach shared memory with the details on why you receive this error and the possible solution to fix it.
Oracle Error Description
ORA-02815: Unable to attach shared memory
Reason for the Error ORA-02815: Unable to attach shared memory
Shmat(2) failed.
How to fix the Error ORA-02815: Unable to attach shared memory ?
You can fix this error in Oracle by following the below steps
Check the UNIX number. If you are unsure about what it means, contact ORACLE customer support.