Required/Optional Statement |
Optional |
Statement Default |
None. If the initialization stream contains
neither BADTRACK nor FORMAT statements and defective tracks existed
on a spool volume before the most recent warm or cold start, I/O errors
will occur when JES3 attempts to use the track group containing those
tracks. |
Placement in Initialization Stream |
This statement must appear before the ENDJSAM
statement. |
Coding Considerations |
- Specify only one track on a statement. The maximum
number of BADTRACK statements that you can specify is 32,767.
- You cannot use a BADTRACK statement to identify defective tracks
in the single track table (STT).
- Do not substitute a FORMAT statement for a BADTRACK statement,
although it also causes JES3 to identify defective tracks.
- Dependent on the TRACK and FORMAT statements.
|
Security Usage |
None |
Performance Considerations |
None |
Initialization Stream Overrides |
None |
Restart or Command Modification |
Cold start or warm start for all parameters.
You can use the *MODIFY,Q,DD=ddname,CYL=cyl,TRK=trk command to add badtrack records. |