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Common Tape System › CA 1 Automatic Pointers Error Correction (APEC) › Startup Procedure › APEC Initialization Parameters

APEC Initialization Parameters

The following parameters are supported for the APEC subtask:

DELAY=shh
STIME=hhmm
ETIME=hhmm
TRUN=t
UPDATE | NOUPDATE
DELAY=shh

Specifies the amount of time in seconds and hundredths of a second, to wait between scanning individual volume or DSNB chains. This parameter is used to control the speed of a scan. When more time is specified, the scan runs slower and has a lower CPU use while scanning.

Default: 002

Example: If a 1/10 of a second delay is requested, use DELAY=010.

STIME=hhmm

Sets a time of day when a scan is automatically started. The start time is specified as local time (not GMT), in hours and minutes and must be less than 2400.

Default: 9:00am (0900)

Example: If a scan is to start at 11:30 pm every day, use STIME=2330

ETIME=hhmm

Sets a time of day when automatic scanning is to stop and can only be set if the STIME parameter is used to set a start time. The end time is specified as local time (not GMT), in hours and minutes and must be less than 2400. If a scan has not completed before the end time is reached the scan is halted.

Default: 5:00pm (1700)

Example: To stop automatic scanning at 8:45am, use ETIME=0845.

TRUN=t

Used to set the number of automatic scans that are to take place between the start time and end time. TRUN may only be specified if both STIME and ETIME have been set. Valid TRUN values are between 1 and 9. The number of scans requested will be distributed across the time period specified in the STIME and ETIME parameters. The TRUN parameter is recommended to prevent running this subtask more than necessary. In most installations, two passes of the TMC (TRUN=2) is recommended.

Default: 1

Example If 4 scans are to be run between the start time and end time a parameter of TRUN=4 would be used

UPDATE|NOUPDATE

Tells the APEC task whether to update the TMC or generate control statements that can be used by utilities TMSUPDTE, TMSAGGR, and TMSUDSNB. A parameter of UPDATE causes the TMC to be directly updated and will not create control statements for the above utilities. A parameter of NOUPDATE causes the TMC to not be updated, but generates control statements that can be used by the above utilities.

Default: UPDATE