Transient Data report
The Transient Data report is produced using the EXEC CICS EXTRACT STATISTICS TDQUEUE command. The statistics data is mapped by the DFHTQGDS.
| Field Heading | Description |
|---|---|
| Transient data reads | The number of times a CI has to be
read from disk. Increasing the buffer allocation decreases this activity.
Source field: TQGACTGT |
| Transient data writes | The number of WRITEs to the intrapartition
transient data set. This includes both WRITEs needed for recovery
and WRITEs forced by the buffer being needed to accommodate another
CI. I/O activity caused by the latter reason can be minimized by
increasing the buffer allocation. Source field: TQGACTPT |
| Transient data formatting writes | The number of times a new CI was
written at the end of the data set in order to increase the amount
of available space. Source field: TQGACTFT |
| Control interval size | The size of the control interval,
expressed in bytes. Source field: TQGACISZ |
| Control intervals in the DFHINTRA data set | The current number of control intervals
active within the intrapartition data set, DFHINTRA. Source field: TQGANCIS |
| Peak control intervals used | The peak value of the number of control
intervals concurrently active in the system. Source field: TQGAMXCI |
| Times NOSPACE on DFHINTRA occurred | The number of times that a NOSPACE
condition has occurred. Source field: TQGANOSP |
| Transient data strings | The number of strings currently active.
Source field: TQGSTSTA |
| Times Transient data string in use | The number of times a string was
accessed. Source field: TQGSTNAL |
| Peak Transient data strings in use | The peak number of strings concurrently
accessed in the system. Source field: TQGSMXAL |
| Times string wait occurred | The number of times that tasks had
to wait because no strings were available. Source field: TQGSTNWT |
| Peak users waiting on string | The peak number of concurrent string
waits in the system. Source field: TQGSMXWT |
| Transient data buffers | The number of transient data buffers
specified in the system initialization table (SIT) or in the SIT overrides.
The number of buffers allocated may exceed the number requested. Source field: TQGANBFA |
| Times Transient data buffer in use | The number of times intrapartition
buffers have been accessed. Source field: TQGATNAL |
| Peak Transient data buffers in use | The peak value of the number of concurrent
intrapartition buffer accesses. Source field: TQGAMXAL |
| Peak buffers containing valid data | The peak number of intrapartition
buffers that contain valid data. Source field: TQGAMXIU |
| Times buffer wait occurred | The number of times a request was
queued because all buffers were allocated to other tasks. A buffer
wait also occurs if the required control interval is already in a
locked buffer, and therefore unavailable, even if there are other
buffers available. Source field: TQGATNWT |
| Peak users waiting on buffer | The peak number of requests queued
because no buffers were available. Source field: TQGAMXWT |
| I/O errors on the DFHINTRA data set | The number of input/output errors
that have occurred on the DFHINTRA data set. Source field: TQGACTIO |