Patent ID: 9037901
Filing Date: 2015-05-19
Classification: G06F

Abstract:
1. A computer program product stored on a non-transitory computer-readable storage medium comprising instructions for: receiving, on a first system, an error condition indicating that a virtual storage access method (VSAM) volume data set (VVDS) on a volume shared by the first system and one or more second systems is not found; locking the volume from receiving changes in response to the error condition; sending a request to one or more of the second systems in response to receiving the error condition, the request requesting VVDS location information from a second system that has the VVDS open in a memory of the second system, the VVDS location information comprising control blocks, the control blocks storing extent information for the VVDS, wherein only systems with the VVDS open comprise the control blocks; and recovering the VVDS using the VVDS location information retrieved by the second system that has the VVDS open by copying the extent information from the control blocks in the memory of the second system to a new VVDS entry in a volume table of content (VTOC).