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Naming restrictions for other objects

There are restrictions on the length of object names. Some object names are reserved for objects defined by the queue manager.


Restrictions on name length

Processes, namelists, clusters, topics, services, and authentication information objects can have names up to 48 characters long.

Channels can have names up to 20 characters long.

Storage classes can have names up to 8 characters long.

CF structures can have names up to 12 characters long.


Reserved object names

Names that start with SYSTEM. are reserved for objects defined by the queue manager. We can use the ALTER or DEFINE REPLACE commands to change these object definitions to suit your installation. The following names are defined for IBM MQ :

Object Name Description
SYSTEM.ADMIN.SVRCONN Server-connection channel used for remote administration of a queue manager
SYSTEM.AUTO.RECEIVER Default receiver channel for auto definition (UNIX, Linux, and Windows systems only)
SYSTEM.AUTO.SVRCONN Default server-connection channel for auto definition (Multiplatforms only)
SYSTEM.BASE.TOPIC Base topic for ASPARENT resolution. If a particular administrative topic object has no parent administrative topic objects, any ASPARENT attributes are inherited from this object
SYSTEM.DEF.CLNTCONN Default client-connection channel definition
SYSTEM.DEF.CLUSRCVR Default cluster-receiver channel definition
SYSTEM.DEF.CLUSSDR Default cluster-sender channel definition
SYSTEM.DEF.RECEIVER Default receiver channel definition
SYSTEM.DEF.REQUESTER Default requester channel definition
SYSTEM.DEF.SENDER Default sender channel definition
SYSTEM.DEF.SERVER Default server channel definition
SYSTEM.DEF.SVRCONN Default server-connection channel definition
SYSTEM.DEFAULT.AUTHINFO.CRLLDAP Default authentication information object definition for defining authentication information objects of type CRLLDAP
SYSTEM.DEFAULT.AUTHINFO.OCSP Default authentication information object definition for defining authentication information objects of type OCSP
SYSTEM.DEFAULT.LISTENER.LU62 Default SNA listener (Windows only)
SYSTEM.DEFAULT.LISTENER.NETBIOS Default NetBIOS listener (Windows only)
SYSTEM.DEFAULT.LISTENER.SPX Default SPX listener (Windows only)
SYSTEM.DEFAULT.LISTENER.TCP Default TCP/IP listener (Multiplatforms only)
SYSTEM.DEFAULT.NAMELIST Default namelist definition
SYSTEM.DEFAULT.PROCESS Default process definition
SYSTEM.DEFAULT.SEVICE Default service (Multiplatforms only)
SYSTEM.DEFAULT.TOPIC Default topic definition
SYSTEM.QPUBSUB.QUEUE.NAMELIST A list of queues for the Queued Publish/Subscribe interface to monitor
SYSTEMST Default storage class definition (z/OS only)
Parent topic: Configuration reference

Last updated: 2020-10-04