Delete Field Failed
Once in a while (and more 3 out of 4 attempts right now), I try to delete a field or adding one, I got the message "Cannot get exclusive schema lock. Either being edited or in use by another application" when I use ArcToolbox or "Can not delete the select field from the selected table/feature class because it is use by another application/user" and I know for sure that it is not!
I re-started my computer and re-try to delete my field and still get the same message.
2 questions: why can't I modify my shapefile and how can I correct the situation?
Mapping Center Answer:
Locking on shapefiles is determined by the operating system. There are no lock files like there might be with a personal geodatabase.
So, if you cannot modify the file, one of two things is likely the culprit:
- There actually is a process using the data. This could be you with a file browser, ArcGIS server, serving the data, or if the folder that contains the shapefile is shared, somebody else.
- The permissions of the file or folder are causing a the problem. Check the Security tab of both the folder and file properties (right click on each in the Windows file browser). The general tab of the file properties will tell you whether the file is Read-only, which can also be a problem (I'm looking at Window XP Professional, so you OS may be different).
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