Applies To:
  • CitectSCADA 1.00 1.01 1.10 1.11 1.20 2.00 2.01 3.00

Windows for Workgroups V3.11 has virtual share and therefore you should not load the Dos file sharing utility in your Autoexec.BAT file. However if you are running Windows V3.10 and you do not load the Dos share utility then you may get errors like "Cannot Open", see Q1529. You may also fail to open (Cannot Open error) a file because it already opened exclusively. If Dos Share is loaded you may still get "Cannot Open" errors because Share may run out of resources. 

The command line for Share is as follows SHARE.EXE /F:space /L:locks, space defaults to 2048 bytes and locks defaults to 20 locked files. Often when using Citect these defaults may not be enough. It is recommended to increase these settings. You can try the following,

C:\DOS\SHARE.EXE /F:4096 /L:60. These settings will normally be sufficient and will work ok provided these resources are available. NOTE: Do not use this with Windows V3.11 or greater.