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Configuration Parameter File Reference
OpenMode
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Read/write mode to use when opening sequential files.
Synopsis
[Miscellaneous]    OpenMode=n
Description
The value n indicates the read/write mode you want used when opening sequential files and no mode is specified in the OPEN command:
Examples
OpenMode=0
Range of Values
0 or 1. On OpenVMS systems, the default value of OpenMode is 1; on all other platforms the default value of OpenMode is 0.
Management Portal
On the page System Administration > Configuration > Additional Settings > Compatibility, in the OpenMode row, select Edit. Choose a mode, Read (0) or Read-Write (1).