v$session v$session_wait
v$process
v$sql
v$sqltext
v$bh
v$lock
v$latch_children
v$sysstat
v$system_event
按组分的几组重要的性能视图
1。System 的 over view
v$sysstat , v$system_event , v$parameter
2。某个session 的当前情况
v$process , v$session , v$session_wait ,v$session_event , v$sesstat
3。SQL 的情况
v$sql , v$sqlarea , v$sql_plan , v$sql_plan_statistics, v$sqltext_with_newlines
3. Latch / lock /ENQUEUE
v$latch , v$latch_children , v$latch_holder , v$lock ,v$enqueue_stat ,v$enqueue_lock
4. IO 方面的
v$segstat , v$filestat , v$tempstat ,v$datafile , v$tempfile
5.shared pool / Library cache
v$Librarycache , v$rowcache , x$ksmsp
6.几个advice也不错
v$db_cache_advice , v$pga_target_advice, v$shared_pool_advice