SAP FILE INTERFACE LOCKING documentation, setup help and example usage

ARTICLE

Locking Files
The file interface does not contain an integrated locking mechanism that ensures that only one ABAP program at a time can access a file. If multiple programs are writing to a file at the same time, the results are unpredictable.
To avoid this situation, use SAP locks or an unambiguous file name, such as UUID s.


Note
When multiple application servers from the application layer try to access a file at the same time, conflicts can still occur despite
SAP locks. This is the case, for example, when the operating system buffers data before writing it to a file.

Documentation extract taken from SAP system, � Copyright SAP AG. All rights reserved