It is no PTF available for ZOS 1.9, only ZOS 1.4
Mariuca Iftime
Systems Programmer
Colonial Bank N.A.
[EMAIL PROTECTED]
Ph# 334-954-1759
Fax# 334-954-1717
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-Original Message-
From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] On
Behalf Of Knutson, Sam
Sent: Friday, May 09, 2008 2:48 PM
To: IBM-MAIN@BAMA.UA.EDU
Subject: Red Alert: OA24741 Sysplex-wide impact due to loop in GRS on
z/OS 1.9 and higher
Sysplex-wide impact due to loop in GRS on z/OS 1.9 and higher
In z/OS 1.9 GRS recovery for GQSCAN retries with incorrect registers.
This can result in an ABEND0A0 followed by repetitive ABEND0C6 or
ABEND0C4 in ISGQNX.
As a result of the program check loop in ISGQNX's recovery no GRS work
is able to run on the failing system. This may cause sysplex-wide impact
for the following reasons:
- Global resources held by the failing system cannot be released causing
tasks that request the resources on other systems to wait.
- If the failing system is a GRS Lock Manager, other systems may not be
able to complete their XES requests.
- Global GQSCANs may time out.
- Global TEST ENQs cannot be processed.
- No list ENQ requests can be processed on other systems if the failing
system is holding the GRS list lock.
Symptoms may also include:
- High CPU usage in GRS and *MASTER* on the failing system.
- Message ISG361I indicating delays on other systems in the Sysplex.
- D GRS, C is unable to complete on the problem system and Message
ISG343I only returns local resource data on other systems.
Please see APAR OA24741 for further details.
Recommended Actions:
- Apply the PTFs for OA24741
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