Operating Instructions › Concatenating Multiple Input Files

Concatenating Multiple Input Files

The SELECT statement contains input indicators which, when turned on, instruct CA JARS to open the appropriate data set(s). Multiple input files are controlled by JCL in conjunction with turned on input indicators.

This product has been programmed to automatically accept and process input data sets under the same file name (DDNAME) with unlike attributes. This feature allows you to concatenate input data sets residing on different device types and having different DCB attributes.

SMF Input File

Multiple SMF files may be input by concatenating data sets using JCL statements. The following examples illustrate how to use this technique:

//CAIJSSMF DD DSN=SMF.JAN98,UNIT=(2400,,DEFER),DISP=OLD,
//            DCB=(RECFM=VBS,LRECL=32760,BLKSIZE=4096),VOL=SER=001039
//         DD DSN=SMF.DEC97,UNIT=AFF=CAIJSSMF,DISP=OLD,
//            DCB=*.CAIJSSMF,VOL=SER=001522

This product processes reel #001039 as defined by the first DD statement. The system rewinds and unloads the first tape and then requests a mount for reel #001522 on the same drive as per the AFF subparameter of the UNIT parameter. The second tape has the same DCB attributes as the first tape, thereby allowing the 'refer back' option to be used.

//CAIJSSMF DD DSN=SMF.JAN98,DISP=SHR
//         DD DSN=SMF.FEB98,DISP=SHR

These data sets are processed in a similar manner as the previous example. The SMF.JAN98 and SMF.FEB98 data sets have been previously cataloged on the system and may be the actual data sets which reside on disk and collect the SMF accounting data.