Home

 

Network problems

 

When using LU 6.2, make sure that your definitions are consistent throughout the network. For example, if you have increased the RU sizes in your CICS Transaction Server for OS/390 or Communications Manager definitions, but you have a controller with a small MAXDATA value in its definition, the session may fail if you attempt to send large messages across the network. A symptom of this may be that channel negotiation takes place successfully, but the link fails when message transfer occurs.

When using TCP, if your channels are unreliable and your connections break, we can set a KEEPALIVE value for your system or channels. You do this using the SO_KEEPALIVE option to set a system-wide value, and on WebSphere MQ for z/OS, we can also use the KeepAlive Interval channel attribute (KAINT) to set channel-specific keepalive values. On WebSphere MQ for z/OS we can alternatively use the RCVTIME and RCVTMIN channel initiator parameters. These options are discussed in Checking that the other end of the channel is still available, and KeepAlive Interval (KAINT).

• Adopting an MCA
  

• Registration time for DDNS
  

 

Parent topic:

When a channel refuses to run

ic19500_

 

Home