ILE COBOL Programmer's Guide
Some ILE COBOL applications depend on subsystems or other
applications. In a multithreaded environment, these dependencies result
in some limitations on ILE COBOL programs:
- SORT/MERGE
- SORT and MERGE should only be active in one thread at a time.
However, this is not enforced by the COBOL run-time environment-- it must
be controlled by the application.
- External and shared files
- External and shared files should not be accessed or updated simultaneously
from multiple threads. However, this is not enforced by the COBOL
run-time environment-- it must be controlled by the application.
In general, synchronizing access to resources visible to an application
within a run unit is the responsibility of the application.
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