Learn the reason and how to resolve the ORA-01045 error message in Oracle.
When you stumble upon an ORA-01045 error, the following error message will appear:
ORA-01045: user identify lacks CREATE SESSION privilege; logon denied
You tried to log into Oracle with a username that has now not been granted the CREATE SESSION privilege.
The option(s) to resolve this Oracle error are:
Have the Oracle DBA supply the username the CREATE SESSION privilege.
Try logging into Oracle with a one of a kind username that has the CREATE SESSION privilege.