What does “ORA-01045: user USERNAME lacks CREATE SESSION privilege;
logon denied” mean?
It means that the username and password with which you tried to login are known and accepted by the oracle server, but that the username doesn’t have permission to create a session. If you think this username should have permission to create sessions send mail to acisdba.

Error Id: ORA-01045

Title: user string lacks CREATE SESSION privilege; logon denied

Description:

user string lacks CREATE SESSION privilege; logon denied

Action:

Grant the user CREATE SESSION privilege.

Cause:

A connect was attempted to a userid which does not have create session privilege.

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