Learn the motive and how to get to the bottom of the ORA-00018 error message in Oracle.
Description
When you come across an ORA-00018 error, the following error message will appear:
ORA-00018: maximum number of sessions exceeded
Cause
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.
Resolution
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.