Default File Characteristics

Runtime Considerations › Specifying File Characteristics › Default File Characteristics

Default File Characteristics

If you do not specify a file's record format, logical record length, and/or block size, CA ADS Batch supplies defaults for the omitted characteristics.

If the record format is not specified, CA ADS Batch supplies one of the following characteristics:

U (undefined), for a physical sequential file
F (fixed), for a SYSIN file
FA (fixed, with control characters), for a SYSOUT file

Once the record format is determined, CA ADS Batch supplies defaults for block size and logical record length based on the record format:

Fixed or Fixed-block Record Format

If the logical record length and the block size are zero (not specified), CA ADS Batch uses a block size of 6233 for physical sequential files, 80 for SYSIN files, and 133 for SYSOUT files, and uses a logical record length equal to the block size.
If the logical record length is not zero and the block size is zero, CA ADS Batch uses a block size equal to the logical record length.
If the logical record length is zero and the block size is not zero, CA ADS Batch uses a logical record size equal to the block size.

Variable or Variable-blocked Record Format

If the logical record length and the block size are zero (not specified), CA ADS Batch uses a block size of 6233 for physical sequential files, 80 for SYSIN files, and 133 for SYSOUT files, and uses a logical record length equal to the block size minus 4.
If the logical record length is not zero and the block size is zero, CA ADS Batch uses a block size equal to the logical record length plus 4.
If the logical record length is zero and the block size is not zero, CA ADS Batch uses a logical record size equal to the block size minus 4.

Undefined Record Format

If the logical record length is not zero and the block size is zero, CA ADS Batch uses a block size equal to the logical record length.
If the block size is zero, CA ADS Batch uses a block size of 6233 for physical sequential files, 80 for SYSIN files, and 133 for SYSOUT files.