ON AN I/O INTERRUPT, THE SCSW CONTAINS AN INVALID ADDRESS.
TRACING CONTINUES AS FAR AS POSSIBLE.
Explanation
The channel command word (CCW) address in the subchannel
status word (SCSW) is not valid because of one of the following:
- The generalized trace facility (GTF) could not translate the real
address of the last CCW into a valid virtual address.
- GTF translated the real address of the last CCW into a virtual
address but could not translate the virtual address back to the same
real address.
- The CCW address is not the address of a double word.
- The CCW address is zero. This occurs when there is a simulated
interrupt after a missing interrupt is detected.
System action
GTF issues this message to the GTF output data
set as a trace record. GTF traces the channel program, as long as
it finds valid CCWs or until it traces the maximum number of CCWs
as specified by the CCWN parameter. GTF writes the IOSB to the GTF
output data set. If an error recovery program (ERP) work area is present,
GTF writes it to the GTF output data set.
System programmer response
Obtain the SYSOUT output for the job.
Search problem reporting data bases for a fix for the problem. If
no fix exists, contact the IBM® Support
Center.
Source
Generalized trace facility (GTF)
Module