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1. Open a command prompt and go to the <PRODUCT_HOME>/bin folder on the machine that hosts the Carbon server.
2. When you run the script, you need to provide the following information:
   • The Carbon database URL: By default, WSO2 Carbon is shipped with H2 database so the default URL is: jdbc:h2:repository/database/WSO2CARBON_DB;DB_CLOSE_ON_EXIT=FALSE. This URL may change if a different database was specified during the installation. Then the URL will be in the form of jdbc:h2:/repository/database/WSO2CARBON_DB.
   • The Database driver class: For the default H2 database, the driver will be automatically picked up by the system. If a different database is used, the driver class needs to be specified.
   • The database's username and password: Again for the default H2 database, the default username and password will be used by the system. However, if a different username/password is used, you are required to reset the admin password.
   • The username and new password of the user whose password is to be changed: If you do not provide these as command line arguments, you will be prompted for it during execution.

   The command line options available for chpasswd is as follows:
   

   Command Line Option	Description	Mandatory?
   --db-url	The database URL	Yes
   --db-driver	The database driver class	No
   --db-username	The username for the database	No
   --db-password	The password for the database	No
   --username	The username of the user whose password is to be changed. If this is not given, you will be prompted for this field later.	No
   --new-password	The new password of the user whose password is to be changed. If this is not given, you will be prompted for this field later.	No

    For example,

   code

   On

   Linux:

   chpasswd.sh

   --db-url

   "jdbc:h2:repository/database/WSO2CARBON_DB"

   
   On

   Windows:

   chpasswd.bat

   --db-url

   "jdbc:h2:repsitory/database/WSO2CARBON_DB"

   The following message is displayed if the password is updated successfully:

   Code Block
   Password of user [username] updated successfully

   Info
   If the database path includes directory names with spaces, the whole URL needs to be included within quotations.