Oracle Solution for Error ora-09812

ORA-09812: Unable to get user clearance from connection

What triggered the Error:

ORACLE was unable to retrieve the user's operating system session clearance from the SQL*Net connection.

What should we do to fix it:

Check the UNIX error number for a possible operating system error. Also check the "additional information" field for the SQL*Net error. If there is no error, contact Oracle Support Services.