Hibernate doesn't use any additional connection, but I'm using the MassIndexer and it needs a big pool, but I haven't so connections.
If this size of pool size is mandatory, this will be a problem for me, because I only have 10 connections.
I'm trying to configure the MassIndexer when it starts to see if with a configuration is able to start with a pool size of 10, but I don't find it.
massIndex.purgeAllOnStart(true) // true by default, highly recommended
.batchSizeToLoadObjects( 25 )
.threadsToLoadObjects( 5 )
.threadsForSubsequentFetching( 10 )