Displays status information for after-image logging, if after-imaging is enabled.

PROMON AI Log Status display

The following shows a sample AI Log Status display.

09/15/16        Status: AI Log
11:35:24       
 
After-image begin date:            08/18/16 10:47
After-image new date:              08/18/16 10:47
After-image open date:             09/15/16 11:31
After-image generation number:     1
Number of after-image extents:     3
Current after-image extent:        13
Number of AI buffers:              5
After-image block size:            8192 bytes
After-image log size:              2168 K
After-image sequence #:            1

The display contains the following fields:

  • After-image begin date — The date of the last AIMAGE BEGIN command.
  • After-image new date — The date of the last AIMAGE NEW command.
  • After-image open date — The date when the AI log was last opened.
  • After-image generation number — The generation number of the current AI extent.
  • Number of after-image extents — The number of AI files or extents.
  • Current after-image extent — The extent number of the current (busy) extent.
  • Number of AI buffers — The number of buffers in the AI buffer pool. You can change the number of AI buffers with the After-image Buffers (-aibufs) startup parameter. The default value is 1.
  • After-image block size — The size of the after-image block. You can change the AI block size. This reduces I/O rates on disks where AI files are located. See Manage Performance for more information.
  • After-image log size — The size of current busy AI extent, in kilobytes.
  • After-image sequence # — The current AI sequence number.