HP Micro Focus Object COBOL/UX Release Notes for Version B.12.35

Chapter 5 77

Known Problems, Limitations, and Fixes

Limitations

HP-UX Large Files are Not Supported

As of HP-UX 10.20, HP-UX supports ﬁles larger than 2 gigabytes.

HP-UX large ﬁles are not supported with HP Micro Focus Object

COBOL/UX; however, the COBOL run-time system generates an error

message (194 file size too large) if HP-UX large ﬁles are

manipulated from COBOL code. If you must manipulate HP-UX large

ﬁles, use C code. If your application mixes COBOL and C, your

operations on HP-UX large ﬁles must not attempt to use COBOL I/O

statements.

Another option is to use Micro Focus Large Files with ﬁle striping as

documented in $COBDIR/docs/callfh.1 and in the section “Callable

File Handler” in the online Programmer’s Guide to File Handling in

$COBDIR/docs/html/library.htm.

HP-UX Kernel Threads are Not Supported

As of HP-UX 10.30, HP-UX supports kernel threads. However, COBOL

only supports threads in the following cases:

• COBOL, operating in no-threads mode, can operate in a non-threaded

environment.

• COBOL, operating in no-threads mode, can operate in the main

thread of a kernel-threads based process.

• COBOL, operating in a single-thread mode, can operate in at most

one thread at any time, in a DCE-threads based process.

Any other combination is not supported.