| Implementation Guide for Oracle Self-Service E-Billing > Customizing User Management >  Customizing the Administrator User Password
 A database administrator can customize the password validation rule for the Command Center administrator using a regular expression. To customize the administrator user password 
Log on to the Oracle Self-Service E-Billing OLTP database instance using SQL*Plus (not as SYSDBA):
OLTP schema username/OLTP schema password@OLTP TNS name
 where: 
OLTP schema username is the name of the OLTP schema user. 
OLTP schema password is the password of the OLTP schema user. 
OLTP TNS name is the TNS name for the OLTP instance. 
Enter the following command, where param_password_rule is the regular expression with the new password rule you want to implement: 
SQL>exec change_pwd_validate_rule(param_password_rule) ; |