Only one user or job can have a data set or member open in edit mode at one time, but more than one user can open a data set or member in view mode. If a user opens a data set or member in edit mode, no other user can edit or view that data set. However, if a user opens a data set or member in view mode, another user can open that data set in either edit or view mode.
If a user attempts to open in edit mode a data set or member that is already open in either view or edit mode, the Data Set in Use dialog displays. This dialog displays the following information about the job currently accessing the data set:
Name of the job that has the data set open in view or edit mode
The data set resource name used by dynamic file allocation
The enqueue type is one of the following:
File can be allocated by other users
File is allocated exclusively to the job
Name of the LPAR on which the resource is allocated
To exit the Data Set in Use dialog, do one of the following:
The action is canceled and the dialog closes.
If the data set is already opened in view mode, your request is processed and the data set opens in the editor.
If another user already has the data set open in edit mode, a message displays informing you that you cannot edit the data set. Click OK and your action is canceled.
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