11g在這個參數的設置上應該發生了變化，以下是11.2.0.1.0的生產數據的查詢數據。fast_start_mttr_target 參數被默認設置爲0了，但是ESTIMATED_MTTR 爲84
SQL> select * from v$version;
BANNER
--------------------------------------------------------------------------------
Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - 64bit Production
PL/SQL Release 11.2.0.1.0 - Production
CORE 11.2.0.1.0 Production
TNS for Linux: Version 11.2.0.1.0 - Production
NLSRTL Version 11.2.0.1.0 - Production
SQL> show parameter fast;
NAME TYPE VALUE
------------------------------------ ---------- ------------------------------
fast_start_io_target integer 0
fast_start_mttr_target integer 0
fast_start_parallel_rollback string LOW
SQL> select RECOVERY_ESTIMATED_IOS REIO,
2 ACTUAL_REDO_BLKS ARB,
3 TARGET_REDO_BLKS TRB,
4 LOG_FILE_SIZE_REDO_BLKS LFSRB,
5 LOG_CHKPT_TIMEOUT_REDO_BLKS LCTRB,
6 LOG_CHKPT_INTERVAL_REDO_BLKS LCIRB,
7 FAST_START_IO_TARGET_REDO_BLKS FSIOTRB,
8 TARGET_MTTR TMTTR,
9 ESTIMATED_MTTR EMTTR,
10 CKPT_BLOCK_WRITES CBW
11 from v$instance_recovery;
REIO ARB TRB LFSRB LCTRB LCIRB FSIOTRB
---------- ---------- ---------- ---------- ---------- ---------- ----------
TMTTR EMTTR CBW
---------- ---------- ----------
125358 2596385 3010023 3397383 3010023
0 84 20871841