On Windows platforms, Linux, and UNIX systems, use the mqsichangeusernameserver command to change various properties of the User Name Server.
On z/OS, use the mqsichangeusernameserver command to change the refresh interval and authentication properties of the User Name Server
You must stop the User Name Server, using mqsistop on Windows platforms and UNIX platforms, or stopcomponent on z/OS, (see mqsistop command) before you can issue this command.
When you restart the User Name Server, using mqsistart on Windows platforms and UNIX platforms, or startcomponent on z/OS, (see mqsistart command) it uses the changed parameters.
For compatibility with existing systems, you can still specify <password>. However, if you do not specify a password with this parameter when you run the command you are prompted to enter a password during its invocation, and to enter the password a second time to verify that you have entered it correctly.
On Linux and UNIX systems, -a is required for Windows platforms compatibility but it is not used in relation to ServiceUserID.
On Linux and UNIX systems, only the last format, username, is valid.
If you use the unqualified form for this user ID (username) in Windows, the operating system searches for the user ID throughout its domain, starting with the local system. This search might take some time to complete.
The ServiceUserID specified must be a member of the local group mqbrkrs. On Windows platforms, it can be an indirect or direct member of the group. The ServiceUserID must also be authorized to access the home directory (where WebSphere Event Broker has been installed), and the working directory (if specified by the mqsicreateusernameserver -w flag). This ID must also be a member (either direct or indirect) of the local group mqm.
The security requirements for the ServiceUserID are detailed in Security requirements for Windows platforms for Windows platforms and in Security requirements for Linux and UNIX platforms for UNIX platforms.
This command returns the following responses:
mqsichangeusernameserver -r 2000
F MQP1UNS,cu r=2000
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