Resolve ORA-00018 Error Message in Oracle

Learn the motive and how to get to the bottom of the ORA-00018 error message in Oracle.


When you come across an ORA-00018 error, the following error message will appear:

ORA-00018: maximum number of sessions exceeded


You tried to execute a statement that requested a resource. Since the maximum variety of classes have been reached, Oracle will now not technique any new aid requests.


The option(s) to resolve this Oracle error are:

Option #1

You can wait a few minutes and try to re-execute the statement(s).

Option #2

You can shut down Oracle, make bigger the SESSIONS parameter in the initialization parameter file, and restart Oracle.