| Author |
Message
|
| mgrabinski |
 Posted: Mon Jun 02, 2003 9:59 pm Post subject: 'Running' but not running |
 |
|
Master
Joined: 16 Oct 2001
Posts: 246
Location: Katowice, Poland
|
I saw a very strange situation yesterday. There was a two-way connection between Win2000 (MQ 5.1) and z/OS (MQ 2.1) SDR-RCVR channels. Seeing from the z/OS point of view, SDR was RUNNING, but its conterpart on Win2000 was inactive. Network ok, IP addresses ok. When I ran DIS CHSTATUS at the sender side, I saw some bytes sent, but none received.
In the Win2000 logs there was not a hint that the channel tried to start, on z/OS every message showed that the channel started succesfully and was running.
Believe me, there is nothing trivial. Everything seems to be ok, but still the SDR on z/OS was RUNNING (but didn't show any activity) and its RCVR end was inactive.
It was at a site operated by my colleague. He said that there had been an overheating problem and the z/OS had gone down. The Win2000 server was also restarted. Before the outage the configuration ran smoothly.
_________________
Marcin Grabinski <>< |
|
| Back to top |
|
 |
| pgorak |
| Posted: Mon Jun 02, 2003 10:25 pm Post subject: |
|
|
Disciple
Joined: 15 Jul 2002
Posts: 158
Location: Cracow, Poland
|
How long did this situation last? I'd bet that if a heartbeat was sent from SDR to RCVR, sender status would change to "RETRYING".
Piotr |
|
| Back to top |
|
|
| mgrabinski |
| Posted: Mon Jun 02, 2003 10:45 pm Post subject: |
|
|
Master
Joined: 16 Oct 2001
Posts: 246
Location: Katowice, Poland
|
HBINT was set to 300. The channel didn't go to RETRYING, it was persistentely in RUNNING state. I spent there over 2 hours.
TCPKEEP was set to YES.
As I mentioned before - it's not trivial 
But thanks anyway for your reply
_________________
Marcin Grabinski <>< |
|
| Back to top |
|
|
| Tibor |
| Posted: Mon Jun 02, 2003 11:03 pm Post subject: |
|
|
Grand Master
Joined: 20 May 2001
Posts: 1033
Location: Hungary
|
Did you test the network connection with telnet or some simple port scanner utility?
I used to do it with telnet:
telnet <host> <port>
meanwhile looking the logs, mostly the listener log.
HTH,
Tibor |
|
| Back to top |
|
|
| interactivechannel |
| Posted: Tue Jun 03, 2003 12:10 am Post subject: |
|
|
Voyager
Joined: 20 May 2003
Posts: 94
Location: uk
|
| If you send a message down the channel it should then change to a retrying state and write error messages to the CHIN log. |
|
| Back to top |
|
|
| mgrabinski |
| Posted: Tue Jun 03, 2003 6:15 am Post subject: |
|
|
Master
Joined: 16 Oct 2001
Posts: 246
Location: Katowice, Poland
|
Messages stayd in XMITQ (Yes, they were committed).
_________________
Marcin Grabinski <>< |
|
| Back to top |
|
|
| interactivechannel |
| Posted: Tue Jun 03, 2003 6:21 am Post subject: |
|
|
Voyager
Joined: 20 May 2003
Posts: 94
Location: uk
|
| Have you tried stopping, resolving then pinging the channel. This should give you an error. |
|
| Back to top |
|
|
| GMcCarthy |
| Posted: Mon Jul 07, 2003 5:29 am Post subject: |
|
|
Centurion
Joined: 06 Nov 2001
Posts: 113
Location: Melville NY
|
I know this is late. I ran into this problem several years ago with V2.1. Please check out PQ49625.
_________________
Regards,
Gina
IBM Certified MQSeries Specialist |
|
| Back to top |
|
|
|
|
