Problem:

AcuServer is being implemented to resolve issues with multiple users accessing the same COBOL files.  The data lives on the server in J:\\data; that J: drive is a network drive, not an internal drive on the server.  When configured to use AcuServer a permission error is encountered as noted in the AcuServer trace file: "Failed: 15,103".  When the file-prefix is configured to access the files directly, not through AcuServer, all of the file access succeeds.  So the permissions allow the access, but it fails through AcuServer.

Resolution:

The AcuServer service runs as the system account and cannot access a mapped drive; the network disk is seen as a mapped drive and so AcuServer fails.  The way to enable AcuServer to access the network disk is to create a symbolic link.  You can leave the J: drive mapped for the users to be able to navigate there; but AcuServer will use the symbolic link. 

Here's how to do it:

1. Log on to the server as Administrator (the actual local Administrator account).

2. Open a command prompt.

3. Create the link with this command:  mklink  /d  \\J  \\\\server\\share

This will create a J directory off of the root, in other words C:\\J.  Note that you can use any name as long as it complies with Windows requirements.  Here J was used only to relate it to the actual J: drive.

4. In the Runtime configuration file set file-prefix for AcuServer

FILE_PREFIX  @servername:C:\\J\\data