The file unit number obtained is in the range 100 to 128. Unit is converted into a longword integer in the process. The named variable into which GET_LUN should place the file unit number. ![]() The following command performs the same tasks as the first two commands above: OPENR, U, 'file.dat', /GET_LUN Syntax Note also that OPENR has a GET_LUN keyword that allows you to simultaneously obtain a free file unit and open a file. Once the data from “file.dat” has been read, the file can be closed and the file unit can be freed with the command: FREE_LUN, U Now U can be used in opening a file: OPENR, U, 'file.dat' Instead of explicitly specifying a file unit number that may already be used, use GET_LUN to obtain a free one and store the result in the variable U by entering: GET_LUN, U Use FREE_LUN to free the file units when finished. Instead of writing routines to assume the use of certain file units, IDL functions and procedures should use GET_LUN to reserve unit numbers in order to avoid conflicts with other routines. Overview of Client Application Deployment Descriptor Elements open application-client.xml Deployment Descriptor Elements application-client open weblogic. The GET_LUN procedure allocates a file unit from a pool of free units.
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