While attempting to open a cluster for input, CA Disk can receive a failure from open processing indicating that the data set was not properly closed by a previous task. When this error is encountered, an IDCAMS VERIFY is required to synchronize the end-of-file marker in the data set with the value found in the catalog. By specifying sysparm VSVERIFY with a value of Y, CA Disk will automatically issue a verify when this condition is encountered and will then proceed to reopen the data set and continue archival processing.
DFP automatically issues a verify against a cluster if the need is detected at open time. Since this feature is viewed as an integrity exposure to some, the user can turn this feature off for CA Disk processing by specifying sysparm VSSYSVER with a value of N (the default). Note that if this feature is turned off, CA Disk can still be instructed to issue the verify by specification of sysparm VSVERIFY with a value of Y.
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