有没有人看过CSS operation: data queryOracle 等待事件并知道它的含义？11.2.0.1 中有一个错误8299200 ，该错误已在 11.2.0.3 中修复。
STATSPACK report for
Database DB Id Instance Inst Num Startup Time Release RAC
~~~~~~~~ ----------- ------------ -------- --------------- ----------- ---
3816595344 SCRATCHEDOUT 1 04-Aug-15 14:16 11.2.0.3.0 YES
Host Name Platform CPUs
Cores Sockets Memory (G)
~~~~ ---------------- ---------------------- ----- ----- ------- ------------
scratchedout Solaris[tm] OE (64-bit 48 24 6 192.0
Snapshot Snap Id Snap Time Sessions Curs/Sess Comment
~~~~~~~~ ---------- ------------------ -------- --------- ------------------
Begin Snap: 237 10-Aug-15 09:00:01 42 1.1
End Snap: 239 10-Aug-15 09:53:54 43 1.0
Elapsed: 53.88 (mins) Av Act Sess: 0.1
DB time: 5.45 (mins) DB CPU: 2.46 (mins)
Cache Sizes Begin End
~~~~~~~~~~~ ---------- ----------
Buffer Cache: 5,792M 5,696M Std Block Size: 8K
Shared Pool: 1,168M 1,264M Log Buffer: 11,592K
Load Profile Per Second Per Transaction Per Exec Per Call
~~~~~~~~~~~~ ------------------ ----------------- ----------- -----------
DB time(s): 0.1 0.1 0.00 0.03
DB CPU(s): 0.1 0.0 0.00 0.01
Redo size: 354,689.1 341,689.5
Logical reads: 1,333.7 1,284.8
Block changes: 158.3 152.5
Physical reads: 33.7 32.5
Physical writes: 46.4 44.7
User calls: 3.6 3.5
Parses: 13.5 13.0
Hard parses: 2.0 1.9
W/A MB processed: 0.8 0.7
Logons: 0.5 0.5
Executes: 46.3 44.6
Rollbacks: 0.0 0.0
Transactions: 1.0
Instance Efficiency Indicators
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Buffer Nowait %: 99.97 Redo NoWait %: 99.99
Buffer Hit %: 98.37 Optimal W/A Exec %: 99.96
Library Hit %: 93.86 Soft Parse %: 85.14
Execute to Parse %: 70.93 Latch Hit %: 99.78
Parse CPU to Parse Elapsd %: 37.01 % Non-Parse CPU: 96.21
Shared Pool Statistics Begin End
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Memory Usage %: 84.22 41.85
% SQL with executions>1: 50.76 68.25
% Memory for SQL w/exec>1: 75.54 68.25
Top 5 Timed Events Avg %Total
~~~~~~~~~~~~~~~~~~ wait Call
Event Waits Time (s) (ms) Time
----------------------------------------- ------------ ----------- ------ ------
CPU time 597 40.9
CSS operation: data query 1,820 337 185 23.1
DFS lock handle 32,161 52 2 3.6
log file parallel write 16,038 51 3 3.5
CSS initialization 21 30 1428 2.1
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