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Store-through Cache System z/OS MVS Programming: Sysplex Services Guide SA23-1400-00 |
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In a store-through cache system, changed and unchanged data items
might be handled as follows:
When you write unchanged data items to the cache structure in the store-through cache system, you can also code GETCOLOCK=YES to obtain the cast-out lock for the data item. Obtaining the cast-out lock serializes the update to permanent storage. If another user attempts to obtain the same cast-out lock, that user's request fails. Whether or not you serialize your permanent updates to storage by obtaining the cast-out lock depends on your protocol. |
Copyright IBM Corporation 1990, 2014
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