ILE COBOL Language Reference
The SAME RECORD AREA clause specifies that two or more files are to
use the same main storage area for processing the current logical
record. All of the files may be open at the same time.
- Note:
- The SAME RECORD AREA clause is intended to make efficient use of main
storage. However, virtual storage architecture eliminates the need for
this clause, and the clause is supported for compatibility rather than for
performance. Use of the SAME RECORD AREA clause actually degrades
performance and increases program size.
SAME RECORD AREA Clause - Format
>>-SAME--RECORD--+------+--+-----+--file-name-3----------------->
'-AREA-' '-FOR-'
.-------------.
V |
>----file-name-4-+---------------------------------------------><
A logical record in the shared storage area is considered to be both of the
following:
- A logical record of each opened output file using the SAME RECORD AREA
clause
- A logical record of the most recently read input file using the SAME
RECORD AREA clause.
The SAME RECORD AREA clause allows transfer of data from one file to
another with no explicit data manipulation because the input/output record
areas of named files are identical, and all are available to the user.
More than one SAME RECORD AREA clause may be included in a program.
However:
- A specific file-name must not appear in more than one SAME RECORD AREA
clause.
- If one or more file-names of a SAME AREA clause appear in a SAME RECORD
AREA clause, all the file-names in that SAME AREA clause must appear in that
SAME RECORD AREA clause. However, the SAME RECORD AREA clause may
contain additional file-names that do not appear in the SAME AREA
clause.
- If the SAME RECORD AREA is specified for several files, the record
description entries or the file description entries for these files must not
include the GLOBAL clause.
- The SAME RECORD AREA clause cannot be used with EXTERNAL files.
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