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