Dataloader/MP Reference Manual

Specifying File-Related Options for DataLoader/MP
DataLoader/MP Reference Manual—424148-003
4-12
SUBTYPE
RECSIZE=num [,PADCHAR=charspec]
where num is the length of the record in bytes, and charspec indicates
what character to use to pad short records on output.
VB <vbspecs>
specifies that the block contains records that are variable in length. The format
of the block is the same as that used by FUP when specifying the VARIN or
VAROUT option. The format of vbspecs is
[BLOCKSIZE=num]
where num is the size of the blocks. The default block size is the maximum
physical I/O size for the given file type. This is equivalent to specifying the
buffer size using BUFSIZE. This is an old method from before BUFSIZE
was implemented, and was retained for compatibility. Use the BUFSIZE
modifier to specify the buffer size instead of using BLOCKSIZE.
IBMVB
specifies that the block contains records that are variable in length. The format
of the block is the same as that used by IBM MVS systems when creating
variable, blocked datasets.
IBMVB is allowed only for input files. The file must be a tape, unstructured disk
file, or $RECEIVE.
SUBTYPE
This modifier is valid only when used for $RECEIVE to enable DataLoader/MP to
appear as something other than a subtype 0 process (the default). See the TYPE
modifier, following, for a more complete discussion.
This modifier has the following format:
SUBTYPE=num
TYPE
This modifier is valid only when used for $RECEIVE to enable DataLoader/MP to
appear as something other than a type 0 process (the default).
This modifier has the following format:
TYPE=num
The TYPE modifier is useful when reading or writing a DataLoader/MP process from a
COBOL program. The COBOL library supports only automatic blocking and unblocking
for tape and unstructured disk files. If a load scenario includes a COBOL program
performing an open of a DataLoader/MP process, to maintain performance, you would
want the records that flow between them to be blocked. For this scenario to occur, the