Situation: Change/Reset the WebLogic Default Admin User's Password
Solution:  we have two methods to change the WebLogic Default Admin User's Password        
- If you know the Admin password
 - If you don’t know the Admin Password, we need to reset the Password.
 
è If you Know the Admin Password
Ø  Login into Weblogic console.
Take "Lock & Edit"
Home -->Summary of Security Realms -->myrealm >User and Groups -->Users
Click on "Customize this table."
Filter by Column: Name --> Enter WebLogic Admin UserName as part of "Criteria."
Click "Apply."
Ø  Changed WebLogic Admin User Password:
Click on "WebLogic Admin UserName" --> Go to Passwords Tab.
Enter a new password for:
*New Password:
*Confirm New Password:
Click on "Save." 
Ø  ShutDown Managed Servers:
Login into WebLogic console.
Take "Lock & Edit"
Environment --> servers --> Control --> Check All managed server --> Shutdown-->Force Shutdown now.
Ø  Shutdown Weblogic Admin server
            Take "Lock & Edit"
Environment --> servers --> Control --> AdminServer --> Shutdown-->Force Shutdown now.
Ø  Change Boot.properties
# $DOMAIN_HOME/servers/$ADMINSERVER_NAME/security
# cp -p boot.properties boot.properties_bkp
# vi boot.properties
username=” weblogic username”
password=” New Password”
Ø  Clear Tmp and cache folders for WebLogic Servers
# $DOMAIN_HOME/servers/SERVER_NAME
# rm -R tmp cache
Ø  Start Weblogic Admin server
# $DOMAIN_HOME/bin
# nohup ./startWebLogic.sh &
Ø  Start Weblogic Managed Servers
Login into Weblogic console.
Take "Lock & Edit"
Environment --> servers --> Control --> Check All managed server --> Start.
è If you Don’t Know Admin password, Reset Admin Password
    Ø  ShutDown Managed Servers:
Login into Weblogic console.
Take "Lock & Edit"
Environment --> servers --> Control --> Check All managed server --> Shutdown-->Force ShutDown now.
    Ø  Shutdown Weblogic Admin server
Environment --> servers --> Control --> AdminServer --> Shutdown-->Force ShutDown now.
Ø Move of LDAP folder for Adminserver and Manager server.
# $DOMAIN_HOME/servers/SERVER_NAME/data/ldap 
# mv ldap ldap_bkp
*Note: If we move ldap folder, We may lose the privileges for user Global roles.
Ø  Set the Environment Variable 
# $DOMAIN_HOME/bin
# . ./setDomainEnv.sh
Ø  Backup  DefaultAuthenticatormyrealmInit.initialized file from ldap folder.
# $ DOMAIN_HOME/servers/AdminServer/data/ldap
#  mv DefaultAuthenticatormyrealmInit.initialized DefaultAuthenticatormyrealmInit.initialized_bkp
Ø  Create a new initialization
                   Create a new initialization file for the default authenticator by running the                                             below command that creates a new DefaultAuthenticatorInit.ldift file in the                                          $DOMAIN_HOME/security subdirectory
                   #java weblogic.security.utils.AdminAccount <username > <newpassword>                                           $DOMAIN_HOME/security
 Ø  Create a boot. Properties file with new username and password already used on the previous step.
# $DOMAIN_HOME/servers/AdminServer/security
# cp -p boot.properties boot.properties_bkp
# vi boot.properties
username=” weblogic username”
password=” New Password”
Ø  Start Weblogic Admin server
# $DOMAIN_HOME/bin
# nohup ./startWebLogic.sh &
Once the admin server comes up and running Weblogic Server will encrypt the password in boot.properties file.
Ø  Start Weblogic Managed Servers
Login into Weblogic console.
Take "Lock & Edit"
Environment --> servers --> Control --> Check All managed server --> Start.






