Use the mqsichangebroker command to change one or more of the configuration parameters of the broker.
You can modify the value of many, but not all, of the parameters that you set when you created the broker. For example, after you change a password, you must run the mqsichangebroker command.
On Windows systems, the user ID used to run this command must have Administrator authority on the local system.
On Linux and UNIX systems, the user ID used to run this command must be a member of the mqbrkrs group.
On z/OS systems, the user ID used to run this command must be a member of a group that has READ and WRITE access to the component directory and access to WebSphere® MQ.
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.