Oracle Solution for Error ora-09801

Solution for Oracle Error ORA-09801

ORA-09801: Unable to get user ID from connection

What triggered the Error:

ORACLE was unable to retrieve the user's ID number 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.