Use the mqsichangebroker command to change some of the startup parameters of the broker. For example, after you change a password, you must run the mqsichangebroker command.
You can also use this command to set the UserExitPath property of a broker.
See mqsistop command and mqsistart command for more information.
On Windows systems, the user ID used to invoke this command must have Administrator authority on the local system.
On Linux and UNIX systems, the user ID used to invoke this command must be a member of the mqbrkrs group.
On z/OS systems, the user ID used to invoke this command must be a member of a group that has READ and WRITE access to the component directory.
Using LDAP: Ensure that the registry is appropriately secured to prevent unauthorized access. The setting of LdapPrincipal and LdapCredentials options on mqsichangebroker is not required for correct operation of the broker. The password is not stored in clear text in the file system.