Linux AS5.3 , Oracle 10.2.0.4 RAC , 3 Nodes
Sat Feb 13 21:24:47 2010
Thread 1 advanced to log sequence 8714 (LGWR switch)
Current log# 26 seq# 8714 mem# 0: /ocfs_ctrl_redo/mxdell/redo26.log
Current log# 26 seq# 8714 mem# 1: /ocfs_data/mxdell/redo26.log
Sat Feb 13 21:27:28 2010
Thread 1 advanced to log sequence 8715 (LGWR switch)
Current log# 27 seq# 8715 mem# 0: /ocfs_ctrl_redo/mxdell/redo27.log
Current log# 27 seq# 8715 mem# 1: /ocfs_data/mxdell/redo27.log
Sat Feb 13 21:28:18 2010
SMON: Parallel transaction recovery tried
Sat Feb 13 21:31:32 2010
Thread 1 advanced to log sequence 8716 (LGWR switch)
Current log# 28 seq# 8716 mem# 0: /ocfs_ctrl_redo/mxdell/redo28.log
Current log# 28 seq# 8716 mem# 1: /ocfs_data/mxdell/redo28.log
Sat Feb 13 21:34:48 2010
Thread 1 advanced to log sequence 8717 (LGWR switch)
Current log# 30 seq# 8717 mem# 0: /ocfs_ctrl_redo/mxdell/redo30.log
Current log# 30 seq# 8717 mem# 1: /ocfs_data/mxdell/redo30.log
Sat Feb 13 21:36:45 2010
Thread 1 advanced to log sequence 8718 (LGWR switch)
Current log# 29 seq# 8718 mem# 0: /ocfs_ctrl_redo/mxdell/redo29.log
Current log# 29 seq# 8718 mem# 1: /ocfs_data/mxdell/redo29.log
Sat Feb 13 21:42:17 2010
Thread 1 advanced to log sequence 8719 (LGWR switch)
Current log# 25 seq# 8719 mem# 0: /ocfs_ctrl_redo/mxdell/redo25.log
Current log# 25 seq# 8719 mem# 1: /ocfs_data/mxdell/redo25.log
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fast_start_parallel_rollback --- 大事务失败的时候 smon 决定是否启动多个进程同时做roll ，可设置为 low 不启动并行rolll
recovery_parallelism --- 数据库恢复的时候决定是否使用多个进程 ，可设置为0
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