A fix is available
APAR status
Closed as program error.
Error description
Your CMASs are CPIC connected. When you IPL, the CMASs fail to connect, resulting in repository syncronization failures. Eventually, the CMAS on the IPL'd system isolates the connecting CMAS. On the IPL'd CMAS you see message: EYUCP0023E CMASA A communications failure has occurred while performing Respository Synchronization with CMAS (CMASB). That CMAS is being isolated. On the other CMAS, you will see EYUCP0024E CMASB This CMAS is being isolated at the request of CMAS (CMASA). Additional Symptoms and Keyword(s): EYUCP0024E EYUCP0023E EYUCL0113E EYUCS0105E
Local fix
Recycle the isolated CMAS.
Problem summary
**************************************************************** * USERS AFFECTED: All CICSPlex SM V3R1M0 Users * **************************************************************** * PROBLEM DESCRIPTION: If a CMAS is short on storage and the * * CICSPlex SM CMAS network topology * * changes, for example due to a CMAS * * starting or stopping, then various * * communications related errors may * * occur. * * * * Symptoms include (but are not limited * * to): * * * * - Communications between the hanging * * CMAS and other CMASes may terminate * * abnormally. * * * * - MASes may not connect and join into * * the network. * * * * - EUI/API/WUI requests may hang. * * * * - Data repository re-synchronization * * failures. * * * * Examination of a the CICSPlex SM CMAS * * trace will show an exception trace * * from method EYU0CPAG (CPAG) with a * * trace point id of 1 and a debug * * text of ADDMXCP. * **************************************************************** * RECOMMENDATION: After applying the PTF that resolves this * * APAR, all CMASes must be recycled to pick * * up the new code. Note that the restarts * * do not need to be done at the same time. * **************************************************************** During a CICSPlex SM network topology change, method EYU0CPAG (CPAG) is called to maintain the CICSPlex SM DLST and TLST control blocks which are used by the communications component to send requests to other CMASes. If a CMAS is being removed from the CMAS network, for example because it is being shut down, or communications with the CMAS has been lost, then CPAG will attempt to Getmain some storage to keep track of which CMASes can no longer be reached. If this Getmain request fails, CPAG will return an exception response to the caller and the DLST and TLST control blocks will be incorrect. Because the DLST and TLST control blocks contain out of date information, various communications related errors may occur due to incorrect routing of requests.
Problem conclusion
EYU0CPAG has been changed to avoid a Getmain if the CMAS network contains less than 128 CMASes. To aid in problem determination new message: EYUCP0033I Disconnect requested for CMAS <cmasname>. Reason: <reason>. will now be issued by methods EYU0CPDG, EYU0CPRL, EYU0CPTI and EYU0CSUC. The EYUCP0033I message will be issued when one of the methods requests that a CMAS to CMAS send link task is to disconnect from its partner system. EYU0CTST has been changed so that EYU0CTST does not attempt to Freemain an address of zero, which results in a CMAS exception trace from method EYU0CTST with a point id of 22 and a debug text of CTSTXSCF.
Temporary fix
FIX AVAILABLE BY PTF ONLY
Comments
APAR Information
APAR number
PK33398
Reported component name
CPSM CICS 3.1
Reported component ID
5655M1501
Reported release
100
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt
Submitted date
2006-10-23
Closed date
2007-09-06
Last modified date
2007-10-02
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
PK51596 UK28913
Modules/Macros
EYUTCMM0 EYUUCMEQ EYU0CPAG EYU0CPDG EYU0CPRL EYU0CPTI EYU0CSUC EYU0CTST
GC34637103 |
Fix information
Fixed component name
CPSM CICS 3.1
Fixed component ID
5655M1501
Applicable component levels
R100 PSY UK28913
UP07/09/07 P F709
Fix is available
Select the PTF appropriate for your component level. You will be required to sign in. Distribution on physical media is not available in all countries.
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Document Information
Modified date:
22 February 2023