A fix is available
APAR status
Closed as program error.
Error description
The device number (CUU) shown in the asynchronous operations manager (AOM) messages AOMAP00I, AOMDR##I, AOMIO06I, and ATTENTION-MSG may be wrong when multiple AOM requests are processed in parallel. For example, when LIBSERV command and/or LBSERV macro MOUNT/RELEASE requests for multiple devices are processed in parallel, all of the AOMAP00I messages preceding the AOMAP20I (MOUNT) or AOMAP21I (RELEASE) completion messages may show the same device number of the last request. This results in the erroneous information that multiple partitions have mounted different volumes in the same tape library device at the same time. In case of the message ATTENTION-MSG, which is only printed with DEBUG ON, it may show the wrong device number, originating from the last request processed. Under rare circumstances the device number (CUU) shown in the AR/JCL message 1YH1I may be random data. For example when canceling a LBSERV macro request using the AR command LIBSERV CANCEL, which has been implicitly invoked by job control (JC) during end of job, the CUU shown in message 1YH1I may be random data (e.g. "OR,"): 1YH1I MOUNT CANCELED FOR UNIT OR,
Local fix
Problem summary
**************************************************************** * USERS AFFECTED: All. * **************************************************************** * PROBLEM DESCRIPTION: Wrong device number (CUU) in AOM * * messages and AR/JCL message. * **************************************************************** 1. The device number (CUU) shown in the asynchronous operations manager (AOM) messages AOMAP00I, AOMDR##I, AOMIO06I, and ATTENTION-MSG may be wrong when multiple AOM requests are processed in parallel. For example, when LIBSERV command and/or LBSERV macro MOUNT/ RELEASE requests for multiple devices are processed in parallel, all of the AOMAP00I messages preceding the AOMAP20I (MOUNT) or AOMAP21I (RELEASE) completion messages may show the same device number of the last request. This results in the erroneous information that multiple partitions have mounted different volumes in the same tape library device at the same time. In case of the message ATTENTION-MSG, which is only printed with DEBUG ON, it may show the wrong device number, originating from the last request processed. 2. Under rare circumstances the device number (CUU) shown in the AR/JCL message 1YH1I may be random data. For example when canceling a LBSERV macro request using the AR command LIBSERV CANCEL, which has been implicitly invoked by job control (JC) during end of job, the CUU shown in message 1YH1I may be random data (e.g. "OR,"): 1YH1I MOUNT CANCELED FOR UNIT OR,
Problem conclusion
1. The device number (CUU) shown in AOM messages AOMAP00I, AOMDRnnI, AOMIO06I, and ATTENTION-MSG was taken from a global variable shared between all AOM requests. During initiation of an AOM request for a device its CUU was stored in this global variable in printable form. When multiple AOM requests were processed in parallel this caused the wrong CUU from another request to be shown in the aforementioned messages. 2. AR LIBSERV CANCEL of LBSERV macro requests, for example those implicitly initiated by job control (e.g. LBSERV RELEASE during end-of-job (EOJ)), caused random data to be shown in the CUU field of the AR/JCL message 1YH1I. This was caused by addressing an appendage to the IJJLBSER control block that is not existing for those requests.
Temporary fix
Comments
APAR Information
APAR number
DY47778
Reported component name
VSE/AF SVR/BAM
Reported component ID
5686VS606
Reported release
62C
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2018-05-09
Closed date
2018-09-18
Last modified date
2018-09-21
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
UD54338
Modules/Macros
$IJBAOM $IJBSLIB
Fix information
Fixed component name
VSE/AF SVR/BAM
Fixed component ID
5686VS606
Applicable component levels
R62C PSY UD54338
UP18/09/21 I 1000
Fix is available
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Document Information
Modified date:
11 December 2020