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- Problem statement
- An abend 0C4 with a reason code of 4, 10, or 11 occurs in all
levels of the module ISTTSCPF when a move character instruction is
processed.
- Common symptoms
- The USS message contains unexpected or extraneous characters,
but not all USS messages are affected. Devices might not activate
correctly or might fail to log on correctly. An abend 0Cx might occur
in module ISTTSCPF.
- Probable cause
- The USSTAB is incorrectly defined. In this module, register 4
points to storage that may not be paged-in (reason code 10 or 11)
or to storage that should not be accessed (reason code 4).
The
TSCB contains a data length field (TSCDATLN) equal to the length of
the USSMSG text plus the length field itself. Subtracting the value
in register 4 from the starting address of the USSMSG table shows
that only the value of TSCDATLN (minus 2 bytes) was moved because
the full amount of storage that was referenced was not paged-in.
- User response
- Code only the length of the USSMSG entry in the USSMSG table.
Do not include the size of the length field.
-
- Problem statement
- An abend 0C4 with a reason code of 4, 10, or 11 occurs in all
levels of the module ISTTSCPF when a move character instruction is
processed.
- Common symptoms
- The USS message contains unexpected or extraneous characters,
but not all USS messages are affected. Devices might not activate
correctly or might fail to log on correctly. An abend 0Cx might occur
in module ISTTSCPF.
- Probable cause
- The USSTAB is incorrectly defined. In this module, register 4
points to storage that may not be paged-in (reason code 10 or 11)
or to storage that should not be accessed (reason code 4).
The
TSCB contains a data length field (TSCDATLN) equal to the length of
the USSMSG text plus the length field itself. Subtracting the value
in register 4 from the starting address of the USSMSG table shows
that only the value of TSCDATLN (minus 2 bytes) was moved because
the full amount of storage that was referenced was not paged-in.
- User response
- Code only the length of the USSMSG entry in the USSMSG table.
Do not include the size of the length field.
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z/OS Communications Server: SNA Diagnosis Vol 1, Techniques and Procedures
Copyright IBM Corporation 1990, 2014