dick scherrer
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Table 59. Compiler limits
Language element Compiler limit
Maximum length of user-defined
words (for example, data-name,
file-name, class-name) 30 bytes
Size of program 999,999 lines
Number of literals 4,194,303((Note 1))
Total length of literals 4,194,303 bytes((Note 1))
Reserved word table entries 1536
COPY REPLACING . . . BY . . .
(items per COPY statement) No limit
Number of COPY libraries No limit
Block size of COPY library 32,767 bytes
Identification division
Environment division
Configuration section
Special-names paragraph
mnemonic-name IS 18
UPSI-n . . . (switches) 0-7
alphabet-name IS . . . No limit
Literal THRU . . . or ALSO . . . 256
Input-Output section
File-control paragraph
SELECT file-name . . .
A maximum of 65,535 file names
can be assigned external names
ASSIGN system-name . . . No limit
ALTERNATE RECORD KEY data-name . .
. 253
RECORD KEY length No limit((Note 3))
RESERVE integer (buffers) 255((Note 4))
I-O-control paragraph
RERUN ON system-name . . . 32,767
RERUN integer RECORDS 16,777,215
SAME RECORD AREA 255
SAME RECORD AREA FOR file-name . .
. 255
SAME SORT/MERGE AREA No limit((Note 2))
MULTIPLE FILE file-name . . . No limit((Note 2))
Data division
77 data item size 134,217,727 bytes
01-49 data item size 134,217,727 bytes
Total 01 + 77 (data items) No limit
88 condition-names . . . No limit
VALUE literal . . . No limit
66 RENAMES . . . No limit
PICTURE clause, number of
characters in character-string 50
PICTURE clause, numeric item digit
positions
With ARITH(COMPAT): 18
With ARITH(EXTEND): 31
PICTURE clause, numeric-edited
character positions 249
Picture symbol replication ( ) 134,217,727 bytes
Picture symbol replication
(editing) 32,767
Picture symbol replication ( ),
class DBCS items 67,108,863 bytes
Picture symbol replication ( ),
class national items 67,108,863 bytes
Elementary item size 134,217,727 bytes
OCCURS integer 134,217,727
Total number of ODOs 4,194,303((Note 1))
Table size 134,217,727 bytes
Table element size 134,217,727 bytes
ASCENDING or DESCENDING KEY . . .
(per OCCURS clause) 12 KEYS
Total length of keys (per OCCURS
clause) 256 bytes
INDEXED BY . . . (index names per
OCCURS clause) 12
Total number of indexes (index
names) per class or program 65,535
Size of relative index 32,765
File section
Revision| FD record description entry Revision| 1,048,575 bytes
FD file-name . . . 65,535
LABEL data-name . . . (if no
optional clauses) 255
Label record length 80 bytes
DATA RECORD data-name . . . No limit((Note 2))
BLOCK CONTAINS integer 2,147,483,647((Note 8))
RECORD CONTAINS integer 1,048,575((Note 5))
LINAGE clause values 99,999,999
SD file-name . . . 65,535
DATA RECORD data-name . . . No limit((Note 2))
Linkage section
Total size 134,213,631 bytes
Local-storage section
Total size 134,217,727 bytes
Working-storage section
Total size of items without the
external attribute 134,217,727 bytes
Total size of items with the
external attribute 134,217,727 bytes
Procedure division
Procedure and constant area 4,194,303 bytes((Note 1))
Procedure division USING
identifier . . . 32,767
Procedure-names 1,048,575((Note 1))
Subscripted data-names per
statement 32,767
Verbs per line (TEST) 7
ACCEPT statement, record length on
input device 32,760
ADD identifier . . . No limit
ALTER procedure-name-1 TO
procedure-name-2 . . . 4,194,303((Note 1))
CALL . . . BY CONTENT identifier 2,147,483,647 bytes
CALL identifier or literal USING
identifier or literal . . . 16,380
CALL literal . . . 4,194,303((Note 1))
Active programs in a run unit 32,767
Number of names called (DYN
option) No limit
CANCEL identifier or literal . . . No limit
CLOSE file-name . . . No limit
COMPUTE identifier . . . No limit
DISPLAY identifier or literal . .
. No limit
DIVIDE identifier . . . No limit
ENTRY USING identifier or literal
. . . No limit
EVALUATE . . . subjects 64
EVALUATE . . . WHEN clauses 256
GO procedure-name . . . DEPENDING 255
INSPECT TALLYING and REPLACING
clauses No limit
MERGE file-name ASC or DES KEY . .
. No limit
Total merge key length 4,092 bytes((Note 6))
MERGE USING file-name . . . 16((Note 7))
MOVE identifier or literal TO
identifier . . . No limit
MULTIPLY identifier . . . No limit
OPEN file-name . . . No limit
PERFORM 4,194,303
Revision| PERFORM . . . TIMES identifier or
Revision| literal Revision| 999,999,999
Revision|
SEARCH . . . WHEN . . . No limit
SET index or identifier . . . TO No limit
SET index . . . UP/DOWN No limit
SORT file-name ASC or DES KEY No limit
Total sort key length 4,092 bytes((Note 6))
SORT USING file-name . . . 16((Note 7))
STRING identifier . . . No limit
STRING DELIMITED identifier or
literal . . . No limit
UNSTRING DELIMITED identifier or
literal . . . 255
UNSTRING INTO identifier or
literal . . . No limit
USE . . . ON file-name . . . No limit
XML PARSE statement, maximum size
of identifier 134,180,862 bytes (67,090,431
national character positions)
Notes:
1. Items included in 4,194,303 byte limit for procedure plus constant
area.
2. Syntax checked, but has no effect on the execution of the program;
there is no limit.
3. No compiler limit, but VSAM limits it to 255 bytes.
4. QSAM.
5. Compiler limit shown, but QSAM limits it to 32,767 bytes.
6. For QSAM and VSAM, the limit is 4088 bytes if EQUALS is coded on
the OPTION control statement.
7. SORT limit for QSAM and VSAM.
8. Requires large block interface (LBI) support provided by OS/390
DFSMS Version 2 Release 10.0 or later. On OS/390 systems with
earlier releases of DFSMS, the limit is 32,767 bytes. For more
information about using large block sizes, see Setting block sizes
in the Enterprise COBOL Programming Guide. |
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