My application creates index manually. If index was build correctly and I generate index again, all index files still are on disk and program creates new index.

Can you give me advice how to remove old index files before creating new?

Hi,
you should be able to delete the Files, Hibernate Search won't prevent that, and when starting it will only create a new empty index if no index is found (if you already provided an index, it won't overwrite it).
Make sure you configure your ReaderProvider to use the not-shared strategy as explained here: http://docs.jboss.org/hibernate/stable/ ... r-strategy

Also set
hibernate.search.indexing_strategy = manual

(see manual for details)