z/OS DFSMSdfp Diagnosis
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TRACE-related Keywords

z/OS DFSMSdfp Diagnosis
SC23-6863-00

Only the first 4 characters are required:
TRIOT
I/O trace without buffers or CCWs. This is TRRIOT+TRWIOT.
TRBUF
I/O trace with buffers and without CCWs. This is TRRBUF+TRWBUF.
TRCCW
I/O trace without buffers and with CCWs. This is TRRCCW+TRWCWW.
TRACE
I/O trace with buffers and CCWs for both reads and writes.
TRRIOT, TRRBUF TRRCCW, TRRALL
Apply only to read operations.
TRWIOT,TRWBUF TRWCCW, TRWALL
Apply only to write operations.
Parent topic: Debug keywords in the PARM field

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