A fix is available
APAR status
Closed as program error.
Error description
After upgrade to V9.2 from V8, customer is receiving the following messages in the chinit joblog. . +CSQX053E !MQH1 CSQXFFST Error information recorded in CSQSNAP data set +CSQX541E !MQH1 CSQXRESP Invalid CCSIDs for data conversion, 1399 and 1208 for channel TO.MQH1.NETCCSSV.00 . The conversion failure is occurring when attempting to convert an rfpTST_MQCONN_REPLY TSH from EBCDIC (CCSID 1399) to UTF-8 (CCSID 1208), in response to a client MQCONN. The one which is failing is the ReconnectionQmId. The conversion is failing with internal conversion code CSQA_CONVERTED_BUFFER_TOO_BIG. . This is the same problem as APARs PI48931/PI69238, which fixed the problem at the V800 and V900 releases, but unfortunately the code was mistakenly not ported forward. .
Local fix
Problem summary
**************************************************************** * USERS AFFECTED: All users of IBM MQ for z/OS Version 9, * * Release 1 Modification 0 and Version 9 * * Release 2 Modification 0. * **************************************************************** * PROBLEM DESCRIPTION: CSQX541E and FFST CSQX053E may occur * * when a client is connecting via a * * SVRCONN channel. * **************************************************************** When a client connects to a SVRCONN channel, it may omit some additional reconnection information. While this is expected, the storage that is allocated to receive this data is always large enough to include it, but because no data was sent by the client, it is not initialized. When this buffer is subsequently used to send a response, the uninitialized data is incorrectly interpreted as being text that requires CCSID conversion. Should this data contain 'characters' that cannot be converted then a CSQX053E message is issued along with CSQX541E. The FFST will show an error with the strings "XFFSrriConvertValidate" and "Data conversion failed".
Problem conclusion
Processing has been amended to initialize the unused area to ensure the data conversion cannot fail.
Temporary fix
Comments
APAR Information
APAR number
PH42731
Reported component name
IBM MQ Z/OS V9
Reported component ID
5655MQ900
Reported release
100
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2021-12-12
Closed date
2022-03-29
Last modified date
2022-05-03
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
UI79919 UI79920
Modules/Macros
CMQXRSRV
Fix information
Fixed component name
IBM MQ Z/OS V9
Fixed component ID
5655MQ900
Applicable component levels
Fix is available
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Document Information
Modified date:
04 May 2022