<s>[INST] opens an objectcontainer objectcontainer on the specified database file for local use . a database file can only be opened once , subsequent attempts to open another objectcontainer objectcontainer against the same file will result ina databasefilelockedexception databasefilelockedexception . database files can only be accessed for read/write access from one process one java vm at one time . all versions except for db4o mobile edition use an internal mechanism to lock the database file for other processes . concode_field_sep PlaceHolder placeHolder concode_field_sep EmbeddedConfiguration newConfiguration [/INST] EmbeddedObjectContainer function ( EmbeddedConfiguration arg0 , String arg1 ) { if ( null == arg0 ) { throw new ArgumentNullException ( ) ; } return ObjectContainerFactory . openObjectContainer ( arg0 , arg1 ) ; </s>