Cause: There is a problem either on the LDAP server or on the client.

Action: Please report this error to the LDAP server administrator or your Database administrator.

Please add more information about this Error if you have any.

The ORA-31202 error is a generic error returned by the DBMS_LDAP and DBMS_LDAP_UTL packages whenever they encounter an unexpected return code from the LDAP server being called. To be able to diagnose this error further it is necessary to determine the LDAP error that is being returned.

To do this trace the LDAP calls made and their responses.

If the server is Oracle Internet Directory (OID) then the simple solution is to enable OID debug and check the response codes.

For all LDAP servers network packet trace can be used as this will show the LDAP requests sent and the responses received.