gtpo1mgw | Operations |
Use this command to display the following information about virtual file access (VFA):
Requirements and Restrictions
None.
Format
|
Additional Information
Online help information is available for this command. To display the help information, enter one of the following:
ZVFAC HELP
ZVFAC ?
Examples
The current status of VFA is displayed in the following example.
+--------------------------------------------------------------------------------+ |User: ZVFAC DISP STA | | | |System: VFAC0017I 07.59.27 DELAYED FILES DISABLED BY SYSTEM | +--------------------------------------------------------------------------------+
The buffer ratios and reserve chain values are displayed in the following example.
+--------------------------------------------------------------------------------+ |User: ZVFAC DISP RES | | | |System: VFAC0006I 07.59.27 VFA KEYPOINT VALUES ARE: | | RAT1055- 10, RAT381- 5, RAT4095- 3 | | RES1055- 5, RES381- 10, RES4095- 15 | | COUNT- 36 | | CURRENT VFA VALUES ARE: | | RAT1055- 1, RAT381- 1, RAT4095- 1 | | RES1055- 20, RES381- 20, RES4095- 20 | | COUNT- 36 | +--------------------------------------------------------------------------------+
The buffer status is displayed in the following example.
+--------------------------------------------------------------------------------+ |User: ZVFAC DISP BUF | | | |System: VFAC0086I 17.08.51 VFA BUFFER STATUS | | BUFFER TYPE 4K LARGE SMALL | | NUMBER OF BUFFERS 4453 4557 4565 | | NUMBER ON RESERVE 219 298 242 | | NUMBER ON AGING 4334 4259 4323 | | NUMBER IN IO WAIT 0 0 0 | | NUMBER IN COMMIT 0 48 8 | | PROGRAM RECORDS 2250 0 0 | | DELAYED-FILE PENDING 13 16 10 | | VFA_S LOCK BUFFERS 24 11 26 | | VFA_X LOCK BUFFERS 13 16 10 | | CACHED RHT LOCKS 9 9 4 | +--------------------------------------------------------------------------------+
All the status, resource, and buffer information is displayed in the following example.
+--------------------------------------------------------------------------------+ |User: ZVFAC DISP ALL | | | |System: ZVFAC DISP ALL | | VFAC0017I 07.59.27 DELAYED FILES DISABLED BY SYSTEM | | VFAC0006I 07.59.27 VFA KEYPOINT VALUES ARE: | | RAT1055- 10, RAT381- 5, RAT4095- 3 | | RES1055- 5, RES381- 10, RES4095- 15 | | COUNT- 36 | | CURRENT VFA VALUES ARE: | | RAT1055- 1, RAT381- 1, RAT4095- 1 | | RES1055- 20, RES381- 20, RES4095- 20 | | COUNT- 36 | | VFAC0086I 07.59.27 VFA BUFFER STATUS | | BUFFER TYPE 4K LARGE SMALL | | NUMBER OF BUFFERS 1581 1582 1589 | | NUMBER ON RESERVE 370 473 324 | | NUMBER ON AGING 1211 1109 1265 | | NUMBER IN IO WAIT 0 0 0 | | NUMBER IN COMMIT 0 0 0 | | PROGRAM RECORDS 360 0 0 | | DELAYED-FILE PENDING 0 0 0 | | VFA-S LOCK BUFFERS 0 0 0 | | VFA-X LOCK BUFFERS 19 0 0 | | CACHED RHT LOCKS 5 0 0 | +--------------------------------------------------------------------------------+
Related Information
See TPF Database Reference for more information about VFA, buffer ratios, reserve chain sizes, and the reuse threshold value.