A fix is available
APAR status
Closed as program error.
Error description
MQ v910 on z/OS An extra checking in V910 is causing the FFSTs to be generated when a Java client at v700 code sends invalid MQOPEN flows to a queue-manager. Errors received starting SVRCONN channel: CSQX053E -MQB1 CSQXFFST Error information recorded in CSQSNAP data set CSQX504E -MQB1 CSQXRESP Local protocol error, channel COPS.SVRCONN type=0000000B data=00000000 Eyecatchers in the CSQSNAP DD include: XFFSrriBadDataReceived XFFSrriConvertValidate TSH received The Client problem is described by IV36766. Additional Symptom(s) Search Keyword(s):
Local fix
N/A
Problem summary
**************************************************************** * USERS AFFECTED: All users of IBM MQ for z/OS Version 9 * * Release 1 Modification 0. * **************************************************************** * PROBLEM DESCRIPTION: When a Java client at version V7.0.0.0 * * connects to a V9.1.0 z/OS queue manager * * an MQOPEN of a queue will fail with * * 'CSQX504E Local protocol error'. * **************************************************************** The Java V7.0.0.0 code does not send a valid flow for the MQOPEN API call. This invalid data is tolerated by the V7.0.1 queue manager, but at V9.1.0, additional tests will detect the invalid flow and terminate the channel connection, reporting a CSQX504E error. In addition an FFST is captured on the z/OS server side indicating "rriBadDataReceived". This issue is addressed in the Java Client Fix Pack 1 (V7.0.0.1 and above), but it may be impractical for a customer to deploy the client-side fix throughout their enterprise.
Problem conclusion
Following the application of the PTF for this APAR, customers may elect to enable less stringent checking of MQOPEN flows from clients to prevent the failure from occurring on the server. This checking will only be disabled when activated using the appropriate CHISERVP service parameter under the direction of the IBM MQ Service team. Without this activation, the server behaviour will remain unchanged. Please contact IBM MQ Service if you wish to activate this capability.
Temporary fix
Comments
APAR Information
APAR number
PH13647
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
2019-06-20
Closed date
2019-07-22
Last modified date
2019-10-01
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
UI64336
Modules/Macros
CMQXRMCV
Fix information
Fixed component name
IBM MQ Z/OS V9
Fixed component ID
5655MQ900
Applicable component levels
R100 PSY UI64336
UP19/10/01 P F909
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:
01 October 2019