Hibernate documentation says second level cache should be set to false for batch updates is this true , if so why ? both are true is any problem ? org.hibernate.cache.ehcache.EhCacheRegionFactory true 50
Why ? - Second level cache should be set to false for batch updates is this true
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The second level cache keeps a reference to all objects which are used in the current transaction. Batch updates are mostly used to update many objects (> 10'000). That many objects need a lot of memory but for little gain: You probably don't need any of them again, soon (or rather, if you update a million objects, you don't really know which one of them you'll need next).
So putting all these objects in the second level cache poses two problems: 1. It wastes memory and 2. it can allocate so much memory that you run out of it.
To disable the cache for the current session, use
session.setCacheMode(CacheMode.IGNORE). Source: https://forum.hibernate.org/viewtopic.php?f=1&t=964775