SharingConversations (MQLONG)

This field specifies the maximum number of conversations that can share a channel instance associated with this channel.

This field is used on client connection and server-connection channels.

A value of 0 means that the channel operates as it did in versions earlier than IBM WebSphere MQ Version 7.0 with respect to the following attributes:

  • Conversation sharing
  • Read ahead
  • STOP CHANNEL(channelname) MODE(QUIESCE)
  • Heartbeating
  • Client asynchronous consumption

A value of 1 is the minimum value for IBM WebSphere MQ Version 7.0 behavior. Although only one conversation is allowed on the channel instance, read ahead, asynchronous consumption, and the Version 7.0 behavior of CLNTCONN-SVRCONN heartbeating and quiescent channel stopping are available.

This is an input field to the exit. It is not present if Version is less than MQCD_VERSION_9.

The default value of this field is 10.

Note: MaxInstances and MaxInstancesPerClient limits applied to a channel restrict the number of channel instances, not the number of conversations that might be sharing those instances. Parent topic: Fields