In this post, you’ll learn more about the Oracle ErrorORA-09801: Unable to get user ID from connection with the details on why you receive this error and the possible solution to fix it.
Oracle Error Description
ORA-09801: Unable to get user ID from connection
Reason for the Error ORA-09801: Unable to get user ID from connection
ORACLE was unable to retrieve the user’s ID number from the SQL*Net connection.
How to fix the Error ORA-09801: Unable to get user ID from connection ?
You can fix this error in Oracle by following the below steps
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.