oracle 常见v$视图整理

1.查看备份，恢复性能
V$BACKUP_SYNC_IO
V$BACKUP_ASYNC_IO

2.? V$IR_FAILURE:
List of all failures, including closed ones (result of the LIST FAILUREcommand)
? V$IR_MANUAL_CHECKLIST:
<wbr>List of manual advice (result of the ADVISE FAILUREcommand)<br> ? V$IR_REPAIR:<br><wbr>List of repairs (result of the ADVISE AILUREcommand)<br> ? V$IR_FAILURE_SET:<br> Cross-reference of failure and advice identifiers<br><br> 3.<br> V$DATABASE_BLOCK_CORRUPTION<br> 查看损坏的数据块<br><br> 4.V$TRANSACTION<br> 哪个事务正在使用的undo segment<br><br> 5.V$UNDOSTAT<br> You can query V$UNDOSTAT.TUNED_UNDORETENTIONto determine the amount of time for which undo is retained for the current undo tablespace.<br><br> 6.<br> V$MEMORY_TARGET_ADVISOR<br> Note:You can also look at the memory target advisor<br><br> 7.<br> V$MEMORY_DYNAMIC_COMPONENTS<br> has the current status of all memory components<br><wbr><br> V$MEMORY_RESIZE_OPS<br> has a circular history buffer of the last 800 memory resize requests<br> <br> V$MEMORY_TARGET_ADVICE<br> provides tuning advice for the MEMORY_TARGETinitialization parameter<br><br> 8.实例统计信息<br> V$SGASTAT<br> ? pool<br> ? name<br> ? bytes<br> V$SYSSTAT<br> ? statistic#<br> ? name<br> ? class<br> ? value<br> ? stat_id<br> V$SYSTEM_EVENT<br> ? event<br> ? total_waits<br> ? total_timeouts<br> ? time_waited<br> ? average_wait<br> ? time_waited_micro<br> V$EVENT_NAME<br> ? event_number<br> ? event_id<br> ? name<br> ? parameter1<br> ? parameter2<br> ? parameter3<br> ? wait_class<br> V$SYSTEM_WAIT_CLASS<br> ? wait_class_id<br> ? wait_class#<br> ? wait_class<br> ? total_waits<br> ? time_waited<br><br><br> 9.会话相关的统计信息<br> V$STATNAME<br> ?statistic#<br> ?name<br> ?class<br><br> V$SESSTAT<br> ?sid<br> ?statistic#<br> ?value<br><br> V$SESSION<br> ?sid<br> ?serial#<br> ?username<br> ?command<br> ?osuser<br> ?seq#<br> ?event#<br> ?event<br> ?p1/2/3text<br> ?p1/2/3<br> ?p1/2/3raw<br> ?wait_class<br> ?wait_time<br> ?seconds_in_wait<br> ?state<br> ?...<br><br> V$SESSION_EVENT<br> ?sid<br> ?event<br> ?total_waits<br> ?total_timeouts<br> ?time_waited<br> ?average_wait<br> ?max_wait<br> ?time_waited_micro<br> ?event_id<br><br> V$EVENT_NAME<br> ?event#<br> ?name<br> ?parameter1<br> ?parameter2<br> ?parameter3<br><br> 10.服务相关的统计信息<br> V$SERVICE_EVENT<br> :Aggregated wait counts and wait times for each service, on a per event basis<br><br> ? V$SERVICE_WAIT_CLASS:<br> Aggregated wait counts and wait times for each service on a wait class basis<br><br><br> 11.Troubleshooting and Tuning Views<br> Instance/Database<br> V$DATABASE<br> V$INSTANCE<br> V$PARAMETER<br> V$SPPARAMETER<br> V$SYSTEM_PARAMETER<br> V$PROCESS<br> V$BGPROCESS<br> V$PX_PROCESS_SYSSTAT<br> V$SYSTEM_EVENT<br><br> Disk<br> V$DATAFILE<br> V$FILESTAT<br> V$LOG<br> V$LOG_HISTORY<br> V$DBFILE<br> V$TEMPFILE<br> V$TEMPSEG_USAGE<br> V$SEGMENT_STATISTICS<br><br> Contention<br> V$LOCK<br> V$UNDOSTAT<br> V$WAITSTAT<br> V$LATCH<br><br> Memory<br> V$BUFFER_POOL_STATISTICS<br> V$LIBRARYCACHE<br> V$SGAINFO<br> V$PGASTAT </wbr></wbr></wbr>