isCOBOL Evolve : Introduction : Introduction to isCOBOL Evolve : Limits and Ranges
Limits and Ranges
isCOBOL has the following limits:
Maximum program size
Limited by Java specifications.
Use the -big compiler option if you encounter the "too many constants" Java error
Maximum Record Size
File handler dependent [A]
Number of Indexed Keys
File handler dependent [A]
Number of Segments per Key
File handler dependent [A]
Maximum Indexed Key Size
File handler dependent [A]
Maximum Sort Key Size
File handler dependent [A]
Maximum duplicate keys
File handler dependent [A]
Maximum Alphanumeric Data Item Size
2,147,483,647 bytes (2GB)
Maximum Numeric Data Item Size
31 digits
Maximum Numeric Edited Data Item Size
2,147,483,648 bytes (2GB)
Maximum Table Indexes
Unlimited
Maximum Open Files/Process
Limited only by the operating system
Maximum Paragraph Size
Limited by Java specifications.
Use the -sns=Statements compiler option if you encounter the "code too large" Java error
Maximum Picture String
Unlimited
Maximum Literal Size
Unlimited
SPECIAL-NAMES Switches
26
Maximum number of OCCURS
2,147,483,647
Maximum recursive CALL depth
Limited by Java configuration.
Use the -Xss<size> Java option to resize the threads stack
Maximum iterations in a PERFORM n TIMES statement
Unlimited
Maximum number of Linkage Section level-01 data items per program
Unlimited
Maximum number of parameters in a CHAIN statement
Unlimited
[A] There is no check done at compile time. You might have an error at runtime if you exceed the limit of the current indexed file handler. See Comparison between JISAM and c-treeRTG for the limits of JISAM and c-treeRTG file handlers. Refer to the third party file handler documentation if you’re using a different file handler (i.e. Btrieve or Vision).