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| receiver channel on z/os |
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| Nizam |
 Posted: Thu Oct 07, 2004 7:30 pm Post subject: receiver channel on z/os |
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Disciple
Joined: 10 Feb 2004
Posts: 160
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Hi,
I have a sender and receiver channels from both windows 2000 queue manager and mainframe(z/os) queue manager.
I know that we only need to start the sender channel.
This following is the status of my receiver channels after i start the sender channels.
Windows QM receiver channel - Inactive 
Mainframe QM receiver chanel - Run
Now the problem is when there is an error and if the sender channel on windows is retrying i still see that the mainframe's receiver channel is in run state. 
When i have to restart the sender channel i first had to bring the receiver channel to inactive state and then start the sender channel.
Is this normal behaviour or do i have to set any particular attributes on the channels.( i have set the channel triggerering and disconnect interval to 0). |
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| siliconfish |
| Posted: Thu Oct 07, 2004 7:57 pm Post subject: |
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Master
Joined: 12 Aug 2002
Posts: 203
Location: USA
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You have to use HBINT Channel attribute and use TCP KEEPALIVE or KAINT to close down the RCVR Channel while the connection is broken.
DISCINT value of Zero means no disconnect; wait indefinitely and this applies only at the SDR end.
Looks like the problem is with your network as the Sender channel is going into Retrying state.
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siliconfish |
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| PeterPotkay |
| Posted: Thu Oct 07, 2004 8:03 pm Post subject: |
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Poobah
Joined: 15 May 2001
Posts: 7722
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Research AdomtMCA and AdoptNewMCA. Yes Heartbeats and Keep Alive should be used as well, but the immediate problem is that your RCVR channel is hung up listening on an orphaned socket. MQ will not let a new connection reach that hung channel. Unless you manually stop it. Or unless you use Adopt MCA, which tells the QM to abondon the original RCVR channel instance in favor of the new attempt coming in.
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Peter Potkay
Keep Calm and MQ On |
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| offshore |
| Posted: Fri Oct 08, 2004 5:38 am Post subject: |
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Master
Joined: 20 Jun 2002
Posts: 222
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Nizam,
The adopt parms for z/OS are named ADOPTMCA & ADOPTCHK.
They are located in the CSQ4XPRM, so once you make the change you'll have to re-run that job to assemble & link edit the load module.
I have ADOPTMCA=YES (default is no...I really think that IBM should change that, but...)
ADOPTCHK=ALL (default, provides the most security by checking QMGR name and network address to verify they're the same.)
Check the System Setup Guide for the other options, which I think are
1.] QMNAME
2.] NETADDR
3.] NONE
Peter had ya on the right track...the AdoptXXXX name is a little different on z/OS compared to distributed systems( UNIX, Windows...). |
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