before version 1.0, performed background garbage collection where the server informs the garbage collector about old versions of updated and deleted rows when they are ready to be cleaned up. This helps helps avoid the need to force a full scan of each record in the database tables to get the garbage collector to remove these old versions. An active transaction has to recognize the need for garbage collection garbage collector unless another record on that page is read and does need cleanup. When all rows in a table are read by the server, any old record versions are flagged to the garbage collector as being

required. The scope of this method is all user connections, except system connections (garbage collector, cache writer, etc.). • at connection level, the idle session timeout is supported by both the reads of records MON$RECORD_IMGC BIGINT Number of records processed by the intermediate garbage collector Appendix E: Monitoring Tables 759 MON$STATEMENTS MON$STATEMENTS displays statements prepared