Guardian Programming Reference Summary for pTAL and TAL

SETMODE Operations
Guardian Programming Reference Summary for pTAL and TAL—522631-001
11-26
152 Disk: Skip cache flushing when closing nonaudited file (C30.00 and later
releases only)
param1
.<15>
= 1 for nonaudited disk files, causes the cache not to be flushed when the file
is closed unless the close is either for the last open with write access or for the
last open with a nonzero sync-depth value.
= 0 disables the effect of SETMODE 152 with param1 = 1.
The param2 parameter is not used with function 152. If it is supplied, it must
be 0.
To be effective, SETMODE 152 should be performed for each open of a file.
Any open that does not perform SETMODE 152 causes a flush of the cache
when it closes the file.
153 Disk: Variable-length audit compression. (D10.00 and later releases. This
function should be avoided if a fallback to a release earlier than D10.00 is
possible.) Enable or disable variable-length audit compression for any
structured Enscribe file.
param1
= 1 enables variable-length audit compression.
= 0 disables variable-length audit compression.
The param2 parameter is not used with function 153. If supplied, it must be
0.
CAUTION: Since this feature generates undo and redo that cannot be
processed correctly by earlier releases of the disk process, a fallback to a
release earlier than D10.00 can result in problems.
If a fallback to a release earlier than D10.00 is possible, this function should be
avoided. If this function is used and a fallback becomes necessary, the
following steps should be taken:
1) The TMF subsystem should be stopped while the affected volumes are
brought up. The TMF subsystem can subsequently be restarted.
2) Once the earlier version of the operating system is running, new TMF
online dumps should be acquired for any TMF-protected files on which
SETMODE function 153 was used if TMF rollforward protection is required.
162 Override System Compression Default on 5190 Cartridge Tape
param1
= 1 No data compression
= 2 Data compression (DRC)
The param2 parameter is not used with function 162.
Users of unlabeled tapes who do not want to use the default compression
setting can use SETMODE 162 to override the default setting. BACKUP and
FUP do not support this operation. This operation is allowed only at the
beginning of tape (BOT). For more information about the 5190 Cartridge Tape
Subsystem, refer to the 5190 Cartridge Tape Subsystem Manual.
<function> Parameters and Effect