ORA-01019: unable to allocate memory in the user side

I got ” ORA-01019: unable to allocate memory in the user side ” error in Oracle database.

ORA-01019: unable to allocate memory in the user side

Details of error are as follows.

ORA-01019: unable to allocate memory in the user side

Cause: The user side memory allocator returned error.

Action: Increase the processes heap size or switch to the old set of calls.

unable to allocate memory in the user side

This ORA-01019 errors are related with the user side memory allocator returned error.

To solve this error, you need to increase the processes heap size or switch to the old set of calls.

Or Check and Correct the ORACLE_HOME path, if you have 2 Oracle client, then delete one of the oracle path in environment variable.

Or Check network and firewall, if enabled then disable it.

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Oracle Tutorial | Oracle Database Tutorials for Beginners ( Junior Oracle DBA )