[Jackrabbit Wiki] Update of "DataStore" by AlexanderKlimetschek

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The following page has been changed by AlexanderKlimetschek:
http://wiki.apache.org/jackrabbit/DataStore

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  Q: When I use the database data store I get the message: 'Table or view does not exists'. A: Maybe the data store table already exists in another schema. When starting the repository, the database data store checks if the table already exists (using a database meta data call), and will create the table if not. If the table exists, but is in another schema, the table is not created, but accessing it may fail (if the other schema is not in the schema search path for this user).
  
- Clustering is supported if you use a clustered file system. You need to set data store path of all cluster nodes to the same location.
+ Clustering is supported if you use a shared file system, such as SAN or NFS. You need to set data store path of all cluster nodes to the same location.
  
  Blob Store: When the data store is enabled, the blob store is not used. The data store solves the same (and more) problems than the blob store. Therefore, the blob store is now deprecated, however it will be supported for quite some time.