WORKLOAD REPOSITORY report for
| DB Name |
DB Id |
Instance |
Inst num |
Release |
RAC |
Host |
| ICCI |
1314098396 |
ICCI1 |
1 |
10.2.0.3.0 |
YES |
HPGICCI1 |
|
|
Snap Id |
Snap Time |
Sessions |
Cursors/Session |
| Begin Snap: |
2678 |
25-Dec-08 14:04:50 |
24 |
1.5 |
| End Snap: |
2680 |
25-Dec-08 15:23:37 |
26 |
1.5 |
| Elapsed: |
|
78.79 (mins) |
|
|
| DB Time: |
|
11.05 (mins) |
|
|
DB Time不包括Oracle后台進程消耗的時間。如果DB Time遠遠小於Elapsed時間，說明數據庫比較空閑。
在79分鍾里（其間收集了3次快照數據），數據庫耗時11分鍾，RDA數據中顯示系統有8個邏輯CPU（4個物理CPU），平均每個CPU耗時1.4分鍾，CPU利用率只有大約2%（1.4/79）。說明系統壓力非常小。
可是對於批量系統，數據庫的工作負載總是集中在一段時間內。如果快照周期不在這一段時間內，或者快照周期跨度太長而包含了大量的數據庫空閑時間，所得出的分析結果是沒有意義的。這也說明選擇分析時間段很關鍵，要選擇能夠代表性能問題的時間段。
Report Summary
Cache Sizes
|
|
Begin |
End |
|
|
| Buffer Cache: |
3,344M |
3,344M |
Std Block Size: |
8K |
| Shared Pool Size: |
704M |
704M |
Log Buffer: |
14,352K |
顯示SGA中每個區域的大小（在AMM改變它們之后），可用來與初始參數值比較。
shared pool主要包括library cache和dictionary cache。library cache用來存儲最近解析（或編譯）后SQL、PL/SQL和Java classes等。library cache用來存儲最近引用的數據字典。發生在library cache或dictionary cache的cache miss代價要比發生在buffer cache的代價高得多。因此shared pool的設置要確保最近使用的數據都能被cache。
Load Profile
|
|
Per Second |
Per Transaction |
| Redo size: |
918,805.72 |
775,912.72 |
| Logical reads: |
3,521.77 |
2,974.06 |
| Block changes: |
1,817.95 |
1,535.22 |
| Physical reads: |
68.26 |
57.64 |
| Physical writes: |
362.59 |
306.20 |
| User calls: |
326.69 |
275.88 |
| Parses: |
38.66 |
32.65 |
| Hard parses: |
0.03 |
0.03 |
| Sorts: |
0.61 |
0.51 |
| Logons: |
0.01 |
0.01 |
| Executes: |
354.34 |
299.23 |
| Transactions: |
1.18 |
|
| % Blocks changed per Read: |
51.62 |
Recursive Call %: |
51.72 |
| Rollback per transaction %: |
85.49 |
Rows per Sort: |
######## |
顯示數據庫負載概況，將之與基線數據比較才具有更多的意義，如果每秒或每事務的負載變化不大，說明應用運行比較穩定。單個的報告數據只說明應用的負載情況，絕大多數據並沒有一個所謂“正確”的值，然而Logons大於每秒1~2個、Hard parses大於每秒100、全部parses超過每秒300表明可能有爭用問題。
Redo size：每秒/每事務產生的redo大小（單位字節），可標志數據庫任務的繁重程序。
Logical reads：每秒/每事務邏輯讀的塊數
Block changes：每秒/每事務修改的塊數
Physical reads：每秒/每事務物理讀的塊數
Physical writes：每秒/每事務物理寫的塊數
User calls：每秒/每事務用戶call次數
Parses：SQL解析的次數
Hard parses：其中硬解析的次數，硬解析太多，說明SQL重用率不高。
Sorts：每秒/每事務的排序次數
Logons：每秒/每事務登錄的次數
Executes：每秒/每事務SQL執行次數
Transactions：每秒事務數
Blocks changed per Read：表示邏輯讀用於修改數據塊的比例
Recursive Call：遞歸調用占所有操作的比率
Rollback per transaction：每事務的回滾率
Rows per Sort：每次排序的行數
注:
Oracle的硬解析和軟解析
提到軟解析(soft parse)和硬解析(hard parse)，就不能不說一下Oracle對sql的處理過程。當你發出一條sql語句交付Oracle，在執行和獲取結果前，Oracle對此sql將進行幾個步驟的處理過程：
1、語法檢查(syntax check)
檢查此sql的拼寫是否語法。
2、語義檢查(semantic check)
諸如檢查sql語句中的訪問對象是否存在及該用戶是否具備相應的權限。
3、對sql語句進行解析(parse)
利用內部算法對sql進行解析，生成解析樹(parse tree)及執行計划(execution plan)。
4、執行sql，返回結果(execute and return)
其中，軟、硬解析就發生在第三個過程里。
Oracle利用內部的hash算法來取得該sql的hash值，然后在library cache里查找是否存在該hash值；
假設存在，則將此sql與cache中的進行比較；
假設“相同”，就將利用已有的解析樹與執行計划，而省略了優化器的相關工作。這也就是軟解析的過程。
誠然，如果上面的2個假設中任有一個不成立，那么優化器都將進行創建解析樹、生成執行計划的動作。這個過程就叫硬解析。
創建解析樹、生成執行計划對於sql的執行來說是開銷昂貴的動作，所以，應當極力避免硬解析，盡量使用軟解析。
Instance Efficiency Percentages (Target 100%)
| Buffer Nowait %: |
100.00 |
Redo NoWait %: |
100.00 |
| Buffer Hit %: |
98.72 |
In-memory Sort %: |
99.86 |
| Library Hit %: |
99.97 |
Soft Parse %: |
99.92 |
| Execute to Parse %: |
89.09 |
Latch Hit %: |
99.99 |
| Parse CPU to Parse Elapsd %: |
7.99 |
% Non-Parse CPU: |
99.95 |
本節包含了Oracle關鍵指標的內存命中率及其它數據庫實例操作的效率。其中Buffer Hit Ratio 也稱Cache Hit Ratio，Library Hit ratio也稱Library Cache Hit ratio。同Load Profile一節相同，這一節也沒有所謂“正確”的值，而只能根據應用的特點判斷是否合適。在一個使用直接讀執行大型並行查詢的DSS環境，20%的Buffer Hit Ratio是可以接受的，而這個值對於一個OLTP系統是完全不能接受的。根據Oracle的經驗，對於OLTPT系統，Buffer Hit Ratio理想應該在90%以上。
Buffer Nowait表示在內存獲得數據的未等待比例。
buffer hit表示進程從內存中找到數據塊的比率，監視這個值是否發生重大變化比這個值本身更重要。對於一般的OLTP系統，如果此值低於80%，應該給數據庫分配更多的內存。
Redo NoWait表示在LOG緩沖區獲得BUFFER的未等待比例。如果太低（可參考90%閥值），考慮增加LOG BUFFER。
library hit表示Oracle從Library Cache中檢索到一個解析過的SQL或PL/SQL語句的比率，當應用程序調用SQL或存儲過程時，Oracle檢查Library Cache確定是否存在解析過的版本，如果存在，Oracle立即執行語句；如果不存在，Oracle解析此語句，並在Library Cache中為它分配共享SQL區。低的library hit ratio會導致過多的解析，增加CPU消耗，降低性能。如果library hit ratio低於90%，可能需要調大shared pool區。
Latch Hit：Latch是一種保護內存結構的鎖，可以認為是SERVER進程獲取訪問內存數據結構的許可。要確保Latch Hit>99%，否則意味着Shared Pool latch爭用，可能由於未共享的SQL，或者Library Cache太小，可使用綁定變更或調大Shared Pool解決。
Parse CPU to Parse Elapsd：解析實際運行時間/(解析實際運行時間+解析中等待資源時間)，越高越好。
Non-Parse CPU ：SQL實際運行時間/(SQL實際運行時間+SQL解析時間)，太低表示解析消耗時間過多。
Execute to Parse：是語句執行與分析的比例，如果要SQL重用率高，則這個比例會很高。該值越高表示一次解析后被重復執行的次數越多。
In-memory Sort：在內存中排序的比率，如果過低說明有大量的排序在臨時表空間中進行。考慮調大PGA。
Soft Parse：軟解析的百分比（softs/softs+hards），近似當作sql在共享區的命中率，太低則需要調整應用使用綁定變量。
Shared Pool Statistics
|
|
Begin |
End |
| Memory Usage %: |
47.19 |
47.50 |
| % SQL with executions>1: |
88.48 |
79.81 |
| % Memory for SQL w/exec>1: |
79.99 |
73.52 |
Memory Usage %：對於一個已經運行一段時間的數據庫來說，共享池內存使用率，應該穩定在75%-90%間，如果太小，說明Shared Pool有浪費，而如果高於90，說明共享池中有爭用，內存不足。
SQL with executions>1：執行次數大於1的sql比率，如果此值太小，說明需要在應用中更多使用綁定變量，避免過多SQL解析。
Memory for SQL w/exec>1：執行次數大於1的SQL消耗內存的占比。
Top 5 Timed Events
| Event |
Waits |
Time(s) |
Avg Wait(ms) |
% Total Call Time |
Wait Class |
| CPU time |
|
515 |
|
77.6 |
|
| SQL*Net more data from client |
27,319 |
64 |
2 |
9.7 |
Network |
| log file parallel write |
5,497 |
47 |
9 |
7.1 |
System I/O |
| db file sequential read |
7,900 |
35 |
4 |
5.3 |
User I/O |
| db file parallel write |
4,806 |
34 |
7 |
5.1 |
System I/O |
這是報告概要的最后一節，顯示了系統中最嚴重的5個等待，按所占等待時間的比例倒序列示。當我們調優時，總希望觀察到最顯著的效果，因此應當從這里入手確定我們下一步做什么。例如如果‘buffer busy wait’是較嚴重的等待事件，我們應當繼續研究報告中Buffer Wait和File/Tablespace IO區的內容，識別哪些文件導致了問題。如果最嚴重的等待事件是I/O事件，我們應當研究按物理讀排序的SQL語句區以識別哪些語句在執行大量I/O，並研究Tablespace和I/O區觀察較慢響應時間的文件。如果有較高的LATCH等待，就需要察看詳細的LATCH統計識別哪些LATCH產生的問題。
在這里，log file parallel write是相對比較多的等待，占用了7%的CPU時間。
通常，在沒有問題的數據庫中，CPU time總是列在第一個。
更多的等待事件，參見本報告 的Wait Events一節。
RAC Statistics
|
|
Begin |
End |
| Number of Instances: |
2 |
2 |
Global Cache Load Profile
|
|
Per Second |
Per Transaction |
| Global Cache blocks received: |
4.16 |
3.51 |
| Global Cache blocks served: |
5.97 |
5.04 |
| GCS/GES messages received: |
408.47 |
344.95 |
| GCS/GES messages sent: |
258.03 |
217.90 |
| DBWR Fusion writes: |
0.05 |
0.05 |
| Estd Interconnect traffic (KB) |
211.16 |
|
Global Cache Efficiency Percentages (Target local+remote 100%)
| Buffer access - local cache %: |
98.60 |
| Buffer access - remote cache %: |
0.12 |
| Buffer access - disk %: |
1.28 |
Global Cache and Enqueue Services - Workload Characteristics
| Avg global enqueue get time (ms): |
0.1 |
| Avg global cache cr block receive time (ms): |
1.1 |
| Avg global cache current block receive time (ms): |
0.8 |
| Avg global cache cr block build time (ms): |
0.0 |
| Avg global cache cr block send time (ms): |
0.0 |
| Global cache log flushes for cr blocks served %: |
3.5 |
| Avg global cache cr block flush time (ms): |
3.9 |
| Avg global cache current block pin time (ms): |
0.0 |
| Avg global cache current block send time (ms): |
0.0 |
| Global cache log flushes for current blocks served %: |
0.4 |
| Avg global cache current block flush time (ms): |
3.0 |
Global Cache and Enqueue Services - Messaging Statistics
| Avg message sent queue time (ms): |
0.0 |
| Avg message sent queue time on ksxp (ms): |
0.3 |
| Avg message received queue time (ms): |
0.5 |
| Avg GCS message process time (ms): |
0.0 |
| Avg GES message process time (ms): |
0.0 |
| % of direct sent messages: |
14.40 |
| % of indirect sent messages: |
77.04 |
| % of flow controlled messages: |
8.56 |
- Wait Events Statistics
- SQL Statistics
- Instance Activity Statistics
- IO Stats
- Buffer Pool Statistics
- Advisory Statistics
- Wait Statistics
- Undo Statistics
- Latch Statistics
- Segment Statistics
- Dictionary Cache Statistics
- Library Cache Statistics
- Memory Statistics
- Streams Statistics
- Resource Limit Statistics
- init.ora Parameters
Wait Events Statistics
- Time Model Statistics
- Wait Class
- Wait Events
- Background Wait Events
- Operating System Statistics
- Service Statistics
- Service Wait Class Stats
Time Model Statistics
- Total time in database user-calls (DB Time): 663s
- Statistics including the word "background" measure background process time, and so do not contribute to the DB time statistic
- Ordered by % or DB time desc, Statistic name
| Statistic Name |
Time (s) |
% of DB Time |
| DB CPU |
514.50 |
77.61 |
| sql execute elapsed time |
482.27 |
72.74 |
| parse time elapsed |
3.76 |
0.57 |
| PL/SQL execution elapsed time |
0.50 |
0.08 |
| hard parse elapsed time |
0.34 |
0.05 |
| connection management call elapsed time |
0.08 |
0.01 |
| hard parse (sharing criteria) elapsed time |
0.00 |
0.00 |
| repeated bind elapsed time |
0.00 |
0.00 |
| PL/SQL compilation elapsed time |
0.00 |
0.00 |
| failed parse elapsed time |
0.00 |
0.00 |
| DB time |
662.97 |
|
| background elapsed time |
185.19 |
|
| background cpu time |
67.48 |
|
此節顯示了各種類型的數據庫處理任務所占用的CPU時間。
Back to Wait Events Statistics
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Wait Class
- s - second
- cs - centisecond - 100th of a second
- ms - millisecond - 1000th of a second
- us - microsecond - 1000000th of a second
- ordered by wait time desc, waits desc
| Wait Class |
Waits |
%Time -outs |
Total Wait Time (s) |
Avg wait (ms) |
Waits /txn |
| User I/O |
66,837 |
0.00 |
120 |
2 |
11.94 |
| System I/O |
28,295 |
0.00 |
93 |
3 |
5.05 |
| Network |
1,571,450 |
0.00 |
66 |
0 |
280.72 |
| Cluster |
210,548 |
0.00 |
29 |
0 |
37.61 |
| Other |
81,783 |
71.82 |
28 |
0 |
14.61 |
| Application |
333,155 |
0.00 |
16 |
0 |
59.51 |
| Concurrency |
5,182 |
0.04 |
5 |
1 |
0.93 |
| Commit |
919 |
0.00 |
4 |
4 |
0.16 |
| Configuration |
25,427 |
99.46 |
1 |
0 |
4.54 |
Back to Wait Events Statistics
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Wait Events
- s - second
- cs - centisecond - 100th of a second
- ms - millisecond - 1000th of a second
- us - microsecond - 1000000th of a second
- ordered by wait time desc, waits desc (idle events last)
| Event |
Waits |
%Time -outs |
Total Wait Time (s) |
Avg wait (ms) |
Waits /txn |
| SQL*Net more data from client |
27,319 |
0.00 |
64 |
2 |
4.88 |
| log file parallel write |
5,497 |
0.00 |
47 |
9 |
0.98 |
| db file sequential read |
7,900 |
0.00 |
35 |
4 |
1.41 |
| db file parallel write |
4,806 |
0.00 |
34 |
7 |
0.86 |
| db file scattered read |
10,310 |
0.00 |
31 |
3 |
1.84 |
| direct path write |
42,724 |
0.00 |
30 |
1 |
7.63 |
| reliable message |
355 |
2.82 |
18 |
49 |
0.06 |
| SQL*Net break/reset to client |
333,084 |
0.00 |
16 |
0 |
59.50 |
| db file parallel read |
3,732 |
0.00 |
13 |
4 |
0.67 |
| gc current multi block request |
175,710 |
0.00 |
10 |
0 |
31.39 |
| control file sequential read |
15,974 |
0.00 |
10 |
1 |
2.85 |
| direct path read temp |
1,873 |
0.00 |
9 |
5 |
0.33 |
| gc cr multi block request |
20,877 |
0.00 |
8 |
0 |
3.73 |
| log file sync |
919 |
0.00 |
4 |
4 |
0.16 |
| gc cr block busy |
526 |
0.00 |
3 |
6 |
0.09 |
| enq: FB - contention |
10,384 |
0.00 |
3 |
0 |
1.85 |
| DFS lock handle |
3,517 |
0.00 |
3 |
1 |
0.63 |
| control file parallel write |
1,946 |
0.00 |
3 |
1 |
0.35 |
| gc current block 2-way |
4,165 |
0.00 |
2 |
0 |
0.74 |
| library cache lock |
432 |
0.00 |
2 |
4 |
0.08 |
| name-service call wait |
22 |
0.00 |
2 |
76 |
0.00 |
| row cache lock |
3,894 |
0.00 |
2 |
0 |
0.70 |
| gcs log flush sync |
1,259 |
42.02 |
2 |
1 |
0.22 |
| os thread startup |
18 |
5.56 |
2 |
89 |
0.00 |
| gc cr block 2-way |
3,671 |
0.00 |
2 |
0 |
0.66 |
| gc current block busy |
113 |
0.00 |
1 |
12 |
0.02 |
| SQL*Net message to client |
1,544,115 |
0.00 |
1 |
0 |
275.83 |
| gc buffer busy |
15 |
6.67 |
1 |
70 |
0.00 |
| gc cr disk read |
3,272 |
0.00 |
1 |
0 |
0.58 |
| direct path write temp |
159 |
0.00 |
1 |
5 |
0.03 |
| gc current grant busy |
898 |
0.00 |
1 |
1 |
0.16 |
| log file switch completion |
29 |
0.00 |
1 |
17 |
0.01 |
| CGS wait for IPC msg |
48,739 |
99.87 |
0 |
0 |
8.71 |
| gc current grant 2-way |
1,142 |
0.00 |
0 |
0 |
0.20 |
| kjbdrmcvtq lmon drm quiesce: ping completion |
9 |
0.00 |
0 |
19 |
0.00 |
| enq: US - contention |
567 |
0.00 |
0 |
0 |
0.10 |
| direct path read |
138 |
0.00 |
0 |
1 |
0.02 |
| enq: WF - contention |
14 |
0.00 |
0 |
9 |
0.00 |
| ksxr poll remote instances |
13,291 |
58.45 |
0 |
0 |
2.37 |
| library cache pin |
211 |
0.00 |
0 |
1 |
0.04 |
| ges global resource directory to be frozen |
9 |
100.00 |
0 |
10 |
0.00 |
| wait for scn ack |
583 |
0.00 |
0 |
0 |
0.10 |
| log file sequential read |
36 |
0.00 |
0 |
2 |
0.01 |
| undo segment extension |
25,342 |
99.79 |
0 |
0 |
4.53 |
| rdbms ipc reply |
279 |
0.00 |
0 |
0 |
0.05 |
| ktfbtgex |
6 |
100.00 |
0 |
10 |
0.00 |
| enq: HW - contention |
44 |
0.00 |
0 |
1 |
0.01 |
| gc cr grant 2-way |
158 |
0.00 |
0 |
0 |
0.03 |
| enq: TX - index contention |
1 |
0.00 |
0 |
34 |
0.00 |
| enq: CF - contention |
64 |
0.00 |
0 |
1 |
0.01 |
| PX Deq: Signal ACK |
37 |
21.62 |
0 |
1 |
0.01 |
| latch free |
3 |
0.00 |
0 |
10 |
0.00 |
| buffer busy waits |
625 |
0.16 |
0 |
0 |
0.11 |
| KJC: Wait for msg sends to complete |
154 |
0.00 |
0 |
0 |
0.03 |
| log buffer space |
11 |
0.00 |
0 |
2 |
0.00 |
| enq: PS - contention |
46 |
0.00 |
0 |
1 |
0.01 |
| enq: TM - contention |
70 |
0.00 |
0 |
0 |
0.01 |
| IPC send completion sync |
40 |
100.00 |
0 |
0 |
0.01 |
| PX Deq: reap credit |
1,544 |
99.81 |
0 |
0 |
0.28 |
| log file single write |
36 |
0.00 |
0 |
0 |
0.01 |
| enq: TT - contention |
46 |
0.00 |
0 |
0 |
0.01 |
| enq: TD - KTF dump entries |
12 |
0.00 |
0 |
1 |
0.00 |
| read by other session |
1 |
0.00 |
0 |
12 |
0.00 |
| LGWR wait for redo copy |
540 |
0.00 |
0 |
0 |
0.10 |
| PX Deq Credit: send blkd |
17 |
5.88 |
0 |
0 |
0.00 |
| enq: TA - contention |
14 |
0.00 |
0 |
0 |
0.00 |
| latch: ges resource hash list |
44 |
0.00 |
0 |
0 |
0.01 |
| enq: PI - contention |
8 |
0.00 |
0 |
0 |
0.00 |
| write complete waits |
1 |
0.00 |
0 |
2 |
0.00 |
| enq: DR - contention |
3 |
0.00 |
0 |
0 |
0.00 |
| enq: MW - contention |
3 |
0.00 |
0 |
0 |
0.00 |
| enq: TS - contention |
3 |
0.00 |
0 |
0 |
0.00 |
| PX qref latch |
150 |
100.00 |
0 |
0 |
0.03 |
| enq: MD - contention |
2 |
0.00 |
0 |
0 |
0.00 |
| latch: KCL gc element parent latch |
11 |
0.00 |
0 |
0 |
0.00 |
| enq: JS - job run lock - synchronize |
1 |
0.00 |
0 |
1 |
0.00 |
| SQL*Net more data to client |
16 |
0.00 |
0 |
0 |
0.00 |
| latch: cache buffers lru chain |
1 |
0.00 |
0 |
0 |
0.00 |
| enq: UL - contention |
1 |
0.00 |
0 |
0 |
0.00 |
| gc current split |
1 |
0.00 |
0 |
0 |
0.00 |
| enq: AF - task serialization |
1 |
0.00 |
0 |
0 |
0.00 |
| latch: object queue header operation |
3 |
0.00 |
0 |
0 |
0.00 |
| latch: cache buffers chains |
1 |
0.00 |
0 |
0 |
0.00 |
| latch: enqueue hash chains |
2 |
0.00 |
0 |
0 |
0.00 |
| SQL*Net message from client |
1,544,113 |
0.00 |
12,626 |
8 |
275.83 |
| gcs remote message |
634,884 |
98.64 |
9,203 |
14 |
113.41 |
| DIAG idle wait |
23,628 |
0.00 |
4,616 |
195 |
4.22 |
| ges remote message |
149,591 |
93.45 |
4,612 |
31 |
26.72 |
| Streams AQ: qmn slave idle wait |
167 |
0.00 |
4,611 |
27611 |
0.03 |
| Streams AQ: qmn coordinator idle wait |
351 |
47.86 |
4,611 |
13137 |
0.06 |
| Streams AQ: waiting for messages in the queue |
488 |
100.00 |
4,605 |
9436 |
0.09 |
| virtual circuit status |
157 |
100.00 |
4,596 |
29272 |
0.03 |
| PX Idle Wait |
1,072 |
97.11 |
2,581 |
2407 |
0.19 |
| jobq slave wait |
145 |
97.93 |
420 |
2896 |
0.03 |
| Streams AQ: waiting for time management or cleanup tasks |
1 |
100.00 |
270 |
269747 |
0.00 |
| PX Deq: Parse Reply |
40 |
40.00 |
0 |
3 |
0.01 |
| PX Deq: Execution Msg |
121 |
26.45 |
0 |
0 |
0.02 |
| PX Deq: Join ACK |
38 |
42.11 |
0 |
1 |
0.01 |
| PX Deq: Execute Reply |
34 |
32.35 |
0 |
0 |
0.01 |
| PX Deq: Msg Fragment |
16 |
0.00 |
0 |
0 |
0.00 |
| Streams AQ: RAC qmn coordinator idle wait |
351 |
100.00 |
0 |
0 |
0.06 |
| class slave wait |
2 |
0.00 |
0 |
0 |
0.00 |
db file scattered read等待事件是當SESSION等待multi-block I/O時發生的，通過是由於full table scans或 index fast full scans。發生過多讀操作的Segments可以在“Segments by Physical Reads”和 “SQL ordered by Reads”節中識別（在其它版本的報告中，可能是別的名稱）。如果在OLTP應用中，不應該有過多的全掃描操作，而應使用選擇性好的索引操作。
DB file sequential read等待意味着發生順序I/O讀等待（通常是單塊讀取到連續的內存區域中），如果這個等待非常嚴重，應該使用上一段的方法確定執行讀操作的熱點SEGMENT，然后通過對大表進行分區以減少I/O量，或者優化執行計划（通過使用存儲大綱或執行數據分析）以避免單塊讀操作引起的sequential read等待。通過在批量應用中，DB file sequential read是很影響性能的事件，總是應當設法避免。
Log File Parallel Write事件是在等待LGWR進程將REDO記錄從LOG 緩沖區寫到聯機日志文件時發生的。雖然寫操作可能是並發的，但LGWR需要等待最后的I/O寫到磁盤上才能認為並行寫的完成，因此等待時間依賴於OS完成所有請求的時間。如果這個等待比較嚴重，可以通過將LOG文件移到更快的磁盤上或者條帶化磁盤（減少爭用）而降低這個等待。
Buffer Busy Waits事件是在一個SESSION需要訪問BUFFER CACHE中的一個數據庫塊而又不能訪問時發生的。緩沖區“busy”的兩個原因是：1）另一個SESSION正在將數據塊讀進BUFFER。2）另一個SESSION正在以排它模式占用着這塊被請求的BUFFER。可以在“Segments by Buffer Busy Waits”一節中找出發生這種等待的SEGMENT，然后通過使用reverse-key indexes並對熱表進行分區而減少這種等待事件。
Log File Sync事件，當用戶SESSION執行事務操作（COMMIT或ROLLBACK等）后，會通知 LGWR進程將所需要的所有REDO信息從LOG BUFFER寫到LOG文件，在用戶SESSION等待LGWR返回安全寫入磁盤的通知時發生此等待。減少此等待的方法寫Log File Parallel Write事件的處理。
Enqueue Waits是串行訪問本地資源的本鎖，表明正在等待一個被其它SESSION（一個或多個）以排它模式鎖住的資源。減少這種等待的方法依賴於生產等待的鎖類型。導致Enqueue等待的主要鎖類型有三種：TX（事務鎖）, TM D（ML鎖）和ST（空間管理鎖）。
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Background Wait Events
- ordered by wait time desc, waits desc (idle events last)
| Event |
Waits |
%Time -outs |
Total Wait Time (s) |
Avg wait (ms) |
Waits /txn |
| log file parallel write |
5,497 |
0.00 |
47 |
9 |
0.98 |
| db file parallel write |
4,806 |
0.00 |
34 |
7 |
0.86 |
| events in waitclass Other |
69,002 |
83.25 |
22 |
0 |
12.33 |
| control file sequential read |
9,323 |
0.00 |
7 |
1 |
1.67 |
| control file parallel write |
1,946 |
0.00 |
3 |
1 |
0.35 |
| os thread startup |
18 |
5.56 |
2 |
89 |
0.00 |
| direct path read |
138 |
0.00 |
0 |
1 |
0.02 |
| db file sequential read |
21 |
0.00 |
0 |
5 |
0.00 |
| direct path write |
138 |
0.00 |
0 |
0 |
0.02 |
| log file sequential read |
36 |
0.00 |
0 |
2 |
0.01 |
| gc cr block 2-way |
96 |
0.00 |
0 |
0 |
0.02 |
| gc current block 2-way |
78 |
0.00 |
0 |
0 |
0.01 |
| log buffer space |
11 |
0.00 |
0 |
2 |
0.00 |
| row cache lock |
59 |
0.00 |
0 |
0 |
0.01 |
| log file single write |
36 |
0.00 |
0 |
0 |
0.01 |
| buffer busy waits |
151 |
0.66 |
0 |
0 |
0.03 |
| gc current grant busy |
29 |
0.00 |
0 |
0 |
0.01 |
| library cache lock |
4 |
0.00 |
0 |
1 |
0.00 |
| enq: TM - contention |
10 |
0.00 |
0 |
0 |
0.00 |
| gc current grant 2-way |
8 |
0.00 |
0 |
0 |
0.00 |
| gc cr multi block request |
7 |
0.00 |
0 |
0 |
0.00 |
| gc cr grant 2-way |
5 |
0.00 |
0 |
0 |
0.00 |
| rdbms ipc message |
97,288 |
73.77 |
50,194 |
516 |
17.38 |
| gcs remote message |
634,886 |
98.64 |
9,203 |
14 |
113.41 |
| DIAG idle wait |
23,628 |
0.00 |
4,616 |
195 |
4.22 |
| pmon timer |
1,621 |
100.00 |
4,615 |
2847 |
0.29 |
| ges remote message |
149,591 |
93.45 |
4,612 |
31 |
26.72 |
| Streams AQ: qmn slave idle wait |
167 |
0.00 |
4,611 |
27611 |
0.03 |
| Streams AQ: qmn coordinator idle wait |
351 |
47.86 |
4,611 |
13137 |
0.06 |
| smon timer |
277 |
6.50 |
4,531 |
16356 |
0.05 |
| Streams AQ: waiting for time management or cleanup tasks |
1 |
100.00 |
270 |
269747 |
0.00 |
| PX Deq: Parse Reply |
40 |
40.00 |
0 |
3 |
0.01 |
| PX Deq: Join ACK |
38 |
42.11 |
0 |
1 |
0.01 |
| PX Deq: Execute Reply |
34 |
32.35 |
0 |
0 |
0.01 |
| Streams AQ: RAC qmn coordinator idle wait |
351 |
100.00 |
0 |
0 |
0.06 |
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Operating System Statistics
| Statistic |
Total |
| NUM_LCPUS |
0 |
| NUM_VCPUS |
0 |
| AVG_BUSY_TIME |
101,442 |
| AVG_IDLE_TIME |
371,241 |
| AVG_IOWAIT_TIME |
5,460 |
| AVG_SYS_TIME |
25,795 |
| AVG_USER_TIME |
75,510 |
| BUSY_TIME |
812,644 |
| IDLE_TIME |
2,971,077 |
| IOWAIT_TIME |
44,794 |
| SYS_TIME |
207,429 |
| USER_TIME |
605,215 |
| LOAD |
0 |
| OS_CPU_WAIT_TIME |
854,100 |
| RSRC_MGR_CPU_WAIT_TIME |
0 |
| PHYSICAL_MEMORY_BYTES |
8,589,934,592 |
| NUM_CPUS |
8 |
| NUM_CPU_CORES |
4 |
NUM_LCPUS： 如果顯示0，是因為沒有設置LPARS
NUM_VCPUS： 同上。
AVG_BUSY_TIME： BUSY_TIME / NUM_CPUS
AVG_IDLE_TIME： IDLE_TIME / NUM_CPUS
AVG_IOWAIT_TIME： IOWAIT_TIME / NUM_CPUS
AVG_SYS_TIME： SYS_TIME / NUM_CPUS
AVG_USER_TIME： USER_TIME / NUM_CPUSar o
BUSY_TIME： time equiv of %usr+%sys in sar output
IDLE_TIME： time equiv of %idle in sar
IOWAIT_TIME： time equiv of %wio in sar
SYS_TIME： time equiv of %sys in sar
USER_TIME： time equiv of %usr in sar
LOAD： 未知
OS_CPU_WAIT_TIME： supposedly time waiting on run queues
RSRC_MGR_CPU_WAIT_TIME： time waited coz of resource manager
PHYSICAL_MEMORY_BYTES： total memory in use supposedly
NUM_CPUS： number of CPUs reported by OS
NUM_CPU_CORES： number of CPU sockets on motherboard
總的elapsed time也可以用以公式計算：
BUSY_TIME + IDLE_TIME + IOWAIT TIME
或：SYS_TIME + USER_TIME + IDLE_TIME + IOWAIT_TIME
（因為BUSY_TIME = SYS_TIME+USER_TIME）
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Service Statistics
- ordered by DB Time
| Service Name |
DB Time (s) |
DB CPU (s) |
Physical Reads |
Logical Reads |
| ICCI |
608.10 |
496.60 |
315,849 |
16,550,972 |
| SYS$USERS |
54.70 |
17.80 |
6,539 |
58,929 |
| ICCIXDB |
0.00 |
0.00 |
0 |
0 |
| SYS$BACKGROUND |
0.00 |
0.00 |
282 |
38,990 |
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Service Wait Class Stats
- Wait Class info for services in the Service Statistics section.
- Total Waits and Time Waited displayed for the following wait classes: User I/O, Concurrency, Administrative, Network
- Time Waited (Wt Time) in centisecond (100th of a second)
| Service Name |
User I/O Total Wts |
User I/O Wt Time |
Concurcy Total Wts |
Concurcy Wt Time |
Admin Total Wts |
Admin Wt Time |
Network Total Wts |
Network Wt Time |
| ICCI |
59826 |
8640 |
4621 |
338 |
0 |
0 |
1564059 |
6552 |
| SYS$USERS |
6567 |
3238 |
231 |
11 |
0 |
0 |
7323 |
3 |
| SYS$BACKGROUND |
443 |
115 |
330 |
168 |
0 |
0 |
0 |
0 |
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SQL Statistics
- SQL ordered by Elapsed Time
- SQL ordered by CPU Time
- SQL ordered by Gets
- SQL ordered by Reads
- SQL ordered by Executions
- SQL ordered by Parse Calls
- SQL ordered by Sharable Memory
- SQL ordered by Version Count
- SQL ordered by Cluster Wait Time
- Complete List of SQL Text
本節按各種資源分別列出對資源消耗最嚴重的SQL語句，並顯示它們所占統計期內全部資源的比例，這給出我們調優指南。例如在一個系統中，CPU資源是系統性能瓶頸所在，那么優化buffer gets最多的SQL語句將獲得最大效果。在一個I/O等待是最嚴重事件的系統中，調優的目標應該是physical IOs最多的SQL語句。
在STATSPACK報告中，沒有完整的SQL語句，可使用報告中的Hash Value通過下面語句從數據庫中查到：
select sql_text
from stats$sqltext
where hash_value = &hash_value
order by piece;
SQL ordered by Elapsed Time
- Resources reported for PL/SQL code includes the resources used by all SQL statements called by the code.
- % Total DB Time is the Elapsed Time of the SQL statement divided into the Total Database Time multiplied by 100
| Elapsed Time (s) |
CPU Time (s) |
Executions |
Elap per Exec (s) |
% Total DB Time |
SQL Id |
SQL Module |
SQL Text |
| 93 |
57 |
1 |
93.50 |
14.10 |
cuidmain@HPGICCI1 (TNS V1-V3) |
insert into CUID select CUID_... |
|
| 76 |
75 |
172,329 |
0.00 |
11.52 |
load_fnsact@HPGICCI1 (TNS V1-V3) |
insert into ICCICCS values (:... |
|
| 58 |
42 |
1 |
58.04 |
8.75 |
cumimain@HPGICCI1 (TNS V1-V3) |
insert into CUMI select CUSV_... |
|
| 51 |
42 |
1 |
50.93 |
7.68 |
cusmmain@HPGICCI1 (TNS V1-V3) |
insert into CUSM select CUSM_... |
|
| 38 |
36 |
166,069 |
0.00 |
5.67 |
|
select c.name, u.name from co... |
|
| 35 |
3 |
1 |
35.00 |
5.28 |
SQL*Plus |
SELECT F.TABLESPACE_NAME, TO_... |
|
| 23 |
23 |
172,329 |
0.00 |
3.46 |
load_fnsact@HPGICCI1 (TNS V1-V3) |
insert into iccifnsact values... |
|
| 15 |
11 |
5 |
2.98 |
2.25 |
|
DECLARE job BINARY_INTEGER := ... |
|
| 14 |
14 |
172,983 |
0.00 |
2.16 |
load_fnsact@HPGICCI1 (TNS V1-V3) |
update ICCIFNSACT set BORM_AD... |
|
| 13 |
13 |
172,337 |
0.00 |
2.00 |
load_oldnewact@HPGICCI1 (TNS V1-V3) |
insert into OLDNEWACT values ... |
|
| 13 |
13 |
166,051 |
0.00 |
1.89 |
icci_migact@HPGICCI1 (TNS V1-V3) |
insert into ICCICCS values (:... |
|
| 10 |
4 |
1 |
9.70 |
1.46 |
cuidmain@HPGICCI1 (TNS V1-V3) |
select CUID_CUST_NO , CUID_ID_... |
|
| 10 |
8 |
5 |
1.91 |
1.44 |
|
INSERT INTO STATS$SGA_TARGET_A... |
|
| 8 |
8 |
172,329 |
0.00 |
1.25 |
load_fnsact@HPGICCI1 (TNS V1-V3) |
update ICCICCS set CCSMAXOVER... |
|
| 8 |
8 |
172,983 |
0.00 |
1.16 |
load_fnsact@HPGICCI1 (TNS V1-V3) |
select * from ICCIPRODCODE wh... |
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SQL ordered by CPU Time
- Resources reported for PL/SQL code includes the resources used by all SQL statements called by the code.
- % Total DB Time is the Elapsed Time of the SQL statement divided into the Total Database Time multiplied by 100
| CPU Time (s) |
Elapsed Time (s) |
Executions |
CPU per Exec (s) |
% Total DB Time |
SQL Id |
SQL Module |
SQL Text |
| 75 |
76 |
172,329 |
0.00 |
11.52 |
load_fnsact@HPGICCI1 (TNS V1-V3) |
insert into ICCICCS values (:... |
|
| 57 |
93 |
1 |
57.31 |
14.10 |
cuidmain@HPGICCI1 (TNS V1-V3) |
insert into CUID select CUID_... |
|
| 42 |
51 |
1 |
42.43 |
7.68 |
cusmmain@HPGICCI1 (TNS V1-V3) |
insert into CUSM select CUSM_... |
|
| 42 |
58 |
1 |
42.01 |
8.75 |
cumimain@HPGICCI1 (TNS V1-V3) |
insert into CUMI select CUSV_... |
|
| 36 |
38 |
166,069 |
0.00 |
5.67 |
|
select c.name, u.name from co... |
|
| 23 |
23 |
172,329 |
0.00 |
3.46 |
load_fnsact@HPGICCI1 (TNS V1-V3) |
insert into iccifnsact values... |
|
| 14 |
14 |
172,983 |
0.00 |
2.16 |
load_fnsact@HPGICCI1 (TNS V1-V3) |
update ICCIFNSACT set BORM_AD... |
|
| 13 |
13 |
172,337 |
0.00 |
2.00 |
load_oldnewact@HPGICCI1 (TNS V1-V3) |
insert into OLDNEWACT values ... |
|
| 13 |
13 |
166,051 |
0.00 |
1.89 |
icci_migact@HPGICCI1 (TNS V1-V3) |
insert into ICCICCS values (:... |
|
| 11 |
15 |
5 |
2.23 |
2.25 |
|
DECLARE job BINARY_INTEGER := ... |
|
| 8 |
8 |
172,329 |
0.00 |
1.25 |
load_fnsact@HPGICCI1 (TNS V1-V3) |
update ICCICCS set CCSMAXOVER... |
|
| 8 |
10 |
5 |
1.60 |
1.44 |
|
INSERT INTO STATS$SGA_TARGET_A... |
|
| 8 |
8 |
172,983 |
0.00 |
1.16 |
load_fnsact@HPGICCI1 (TNS V1-V3) |
select * from ICCIPRODCODE wh... |
|
| 4 |
10 |
1 |
3.54 |
1.46 |
cuidmain@HPGICCI1 (TNS V1-V3) |
select CUID_CUST_NO , CUID_ID_... |
|
| 3 |
35 |
1 |
3.13 |
5.28 |
SQL*Plus |
SELECT F.TABLESPACE_NAME, TO_... |
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SQL ordered by Gets
- Resources reported for PL/SQL code includes the resources used by all SQL statements called by the code.
- Total Buffer Gets: 16,648,792
- Captured SQL account for 97.9% of Total
| Buffer Gets |
Executions |
Gets per Exec |
%Total |
CPU Time (s) |
Elapsed Time (s) |
SQL Id |
SQL Module |
SQL Text |
| 3,305,363 |
172,329 |
19.18 |
19.85 |
74.57 |
76.41 |
load_fnsact@HPGICCI1 (TNS V1-V3) |
insert into ICCICCS values (:... |
|
| 2,064,414 |
1 |
2,064,414.00 |
12.40 |
57.31 |
93.50 |
cuidmain@HPGICCI1 (TNS V1-V3) |
insert into CUID select CUID_... |
|
| 1,826,869 |
166,069 |
11.00 |
10.97 |
35.84 |
37.60 |
|
select c.name, u.name from co... |
|
| 1,427,648 |
172,337 |
8.28 |
8.58 |
12.97 |
13.29 |
load_oldnewact@HPGICCI1 (TNS V1-V3) |
insert into OLDNEWACT values ... |
|
| 1,278,667 |
172,329 |
7.42 |
7.68 |
22.85 |
22.94 |
load_fnsact@HPGICCI1 (TNS V1-V3) |
insert into iccifnsact values... |
|
| 1,216,367 |
1 |
1,216,367.00 |
7.31 |
42.43 |
50.93 |
cusmmain@HPGICCI1 (TNS V1-V3) |
insert into CUSM select CUSM_... |
|
| 1,107,305 |
1 |
1,107,305.00 |
6.65 |
42.01 |
58.04 |
cumimain@HPGICCI1 (TNS V1-V3) |
insert into CUMI select CUSV_... |
|
| 898,868 |
172,983 |
5.20 |
5.40 |
14.28 |
14.34 |
load_fnsact@HPGICCI1 (TNS V1-V3) |
update ICCIFNSACT set BORM_AD... |
|
| 711,450 |
166,051 |
4.28 |
4.27 |
12.52 |
12.55 |
icci_migact@HPGICCI1 (TNS V1-V3) |
insert into ICCICCS values (:... |
|
| 692,996 |
172,329 |
4.02 |
4.16 |
8.31 |
8.31 |
load_fnsact@HPGICCI1 (TNS V1-V3) |
update ICCICCS set CCSMAXOVER... |
|
| 666,748 |
166,052 |
4.02 |
4.00 |
6.36 |
6.36 |
icci_migact@HPGICCI1 (TNS V1-V3) |
select NEWACTNO into :b0 from... |
|
| 345,357 |
172,983 |
2.00 |
2.07 |
7.70 |
7.71 |
load_fnsact@HPGICCI1 (TNS V1-V3) |
select * from ICCIPRODCODE wh... |
|
| 231,756 |
51,633 |
4.49 |
1.39 |
5.75 |
5.83 |
load_fnsact@HPGICCI1 (TNS V1-V3) |
insert into ICCIRPYV values (... |
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SQL ordered by Reads
- Total Disk Reads: 322,678
- Captured SQL account for 66.1% of Total
| Physical Reads |
Executions |
Reads per Exec |
%Total |
CPU Time (s) |
Elapsed Time (s) |
SQL Id |
SQL Module |
SQL Text |
| 66,286 |
1 |
66,286.00 |
20.54 |
57.31 |
93.50 |
cuidmain@HPGICCI1 (TNS V1-V3) |
insert into CUID select CUID_... |
|
| 50,646 |
1 |
50,646.00 |
15.70 |
3.54 |
9.70 |
cuidmain@HPGICCI1 (TNS V1-V3) |
select CUID_CUST_NO , CUID_ID_... |
|
| 24,507 |
1 |
24,507.00 |
7.59 |
42.01 |
58.04 |
cumimain@HPGICCI1 (TNS V1-V3) |
insert into CUMI select CUSV_... |
|
| 21,893 |
1 |
21,893.00 |
6.78 |
42.43 |
50.93 |
cusmmain@HPGICCI1 (TNS V1-V3) |
insert into CUSM select CUSM_... |
|
| 19,761 |
1 |
19,761.00 |
6.12 |
2.14 |
6.04 |
cumimain@HPGICCI1 (TNS V1-V3) |
select CUSV_CUST_NO from CUMI... |
|
| 19,554 |
1 |
19,554.00 |
6.06 |
1.27 |
3.83 |
SQL*Plus |
select count(*) from CUSVAA_T... |
|
| 6,342 |
1 |
6,342.00 |
1.97 |
3.13 |
35.00 |
SQL*Plus |
SELECT F.TABLESPACE_NAME, TO_... |
|
| 4,385 |
1 |
4,385.00 |
1.36 |
1.59 |
2.43 |
cusmmain@HPGICCI1 (TNS V1-V3) |
select CUSM_CUST_ACCT_NO from... |
|
| 63 |
5 |
12.60 |
0.02 |
11.17 |
14.91 |
|
DECLARE job BINARY_INTEGER := ... |
|
| 35 |
1 |
35.00 |
0.01 |
0.08 |
0.67 |
SQL*Plus |
BEGIN dbms_workload_repository... |
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SQL ordered by Executions
- Total Executions: 1,675,112
- Captured SQL account for 99.8% of Total
| Executions |
Rows Processed |
Rows per Exec |
CPU per Exec (s) |
Elap per Exec (s) |
SQL Id |
SQL Module |
SQL Text |
| 172,983 |
172,329 |
1.00 |
0.00 |
0.00 |
load_fnsact@HPGICCI1 (TNS V1-V3) |
select * from ICCIPRODCODE wh... |
|
| 172,983 |
172,329 |
1.00 |
0.00 |
0.00 |
load_fnsact@HPGICCI1 (TNS V1-V3) |
update ICCIFNSACT set BORM_AD... |
|
| 172,337 |
172,337 |
1.00 |
0.00 |
0.00 |
load_oldnewact@HPGICCI1 (TNS V1-V3) |
insert into OLDNEWACT values ... |
|
| 172,329 |
172,329 |
1.00 |
0.00 |
0.00 |
load_fnsact@HPGICCI1 (TNS V1-V3) |
insert into iccifnsact values... |
|
| 172,329 |
172,329 |
1.00 |
0.00 |
0.00 |
load_fnsact@HPGICCI1 (TNS V1-V3) |
update ICCICCS set CCSMAXOVER... |
|
| 172,329 |
6,286 |
0.04 |
0.00 |
0.00 |
load_fnsact@HPGICCI1 (TNS V1-V3) |
insert into ICCICCS values (:... |
|
| 166,069 |
166,069 |
1.00 |
0.00 |
0.00 |
|
select c.name, u.name from co... |
|
| 166,052 |
166,052 |
1.00 |
0.00 |
0.00 |
icci_migact@HPGICCI1 (TNS V1-V3) |
select NEWACTNO into :b0 from... |
|
| 166,051 |
166,051 |
1.00 |
0.00 |
0.00 |
icci_migact@HPGICCI1 (TNS V1-V3) |
insert into ICCICCS values (:... |
|
| 51,740 |
51,740 |
1.00 |
0.00 |
0.00 |
load_fnsact@HPGICCI1 (TNS V1-V3) |
select count(*) into :b0 fro... |
|
| 51,633 |
51,633 |
1.00 |
0.00 |
0.00 |
load_fnsact@HPGICCI1 (TNS V1-V3) |
insert into ICCIRPYV values (... |
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SQL ordered by Parse Calls
- Total Parse Calls: 182,780
- Captured SQL account for 99.0% of Total
| Parse Calls |
Executions |
% Total Parses |
SQL Id |
SQL Module |
SQL Text |
| 166,069 |
166,069 |
90.86 |
|
select c.name, u.name from co... |
|
| 6,304 |
6,304 |
3.45 |
|
select type#, blocks, extents,... |
|
| 2,437 |
2,438 |
1.33 |
|
select file# from file$ where ... |
|
| 1,568 |
1,568 |
0.86 |
|
update seg$ set type#=:4, bloc... |
|
| 1,554 |
1,554 |
0.85 |
|
update tsq$ set blocks=:3, max... |
|
| 444 |
444 |
0.24 |
|
select blocks, maxblocks, gran... |
|
| 421 |
421 |
0.23 |
|
lock table sys.mon_mods$ in ex... |
|
| 421 |
421 |
0.23 |
|
update sys.mon_mods$ set inser... |
|
| 86 |
86 |
0.05 |
|
INSERT INTO sys.wri$_adv_messa... |
|
| 81 |
81 |
0.04 |
|
SELECT sys.wri$_adv_seq_msggro... |
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SQL ordered by Sharable Memory
No data exists for this section of the report.
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SQL ordered by Version Count
No data exists for this section of the report.
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SQL ordered by Cluster Wait Time
| Cluster Wait Time (s) |
CWT % of Elapsd Time |
Elapsed Time(s) |
CPU Time(s) |
Executions |
SQL Id |
SQL Module |
SQL Text |
| 10.96 |
11.72 |
93.50 |
57.31 |
1 |
cuidmain@HPGICCI1 (TNS V1-V3) |
insert into CUID select CUID_... |
|
| 4.21 |
7.25 |
58.04 |
42.01 |
1 |
cumimain@HPGICCI1 (TNS V1-V3) |
insert into CUMI select CUSV_... |
|
| 3.62 |
7.12 |
50.93 |
42.43 |
1 |
cusmmain@HPGICCI1 (TNS V1-V3) |
insert into CUSM select CUSM_... |
|
| 2.39 |
6.35 |
37.60 |
35.84 |
166,069 |
|
select c.name, u.name from co... |
|
| 2.38 |
3.12 |
76.41 |
74.57 |
172,329 |
load_fnsact@HPGICCI1 (TNS V1-V3) |
insert into ICCICCS values (:... |
|
| 1.64 |
16.91 |
9.70 |
3.54 |
1 |
cuidmain@HPGICCI1 (TNS V1-V3) |
select CUID_CUST_NO , CUID_ID_... |
|
| 1.06 |
3.02 |
35.00 |
3.13 |
1 |
SQL*Plus |
SELECT F.TABLESPACE_NAME, TO_... |
|
| 0.83 |
13.76 |
6.04 |
2.14 |
1 |
cumimain@HPGICCI1 (TNS V1-V3) |
select CUSV_CUST_NO from CUMI... |
|
| 0.66 |
87.90 |
0.75 |
0.42 |
444 |
|
select blocks, maxblocks, gran... |
|
| 0.50 |
13.01 |
3.83 |
1.27 |
1 |
SQL*Plus |
select count(*) from CUSVAA_T... |
|
| 0.50 |
51.75 |
0.96 |
0.79 |
1,554 |
|
update tsq$ set blocks=:3, max... |
|
| 0.33 |
91.11 |
0.36 |
0.33 |
187 |
|
select obj#, type#, ctime, mti... |
|
| 0.33 |
2.47 |
13.29 |
12.97 |
172,337 |
load_oldnewact@HPGICCI1 (TNS V1-V3) |
insert into OLDNEWACT values ... |
|
| 0.29 |
1.26 |
22.94 |
22.85 |
172,329 |
load_fnsact@HPGICCI1 (TNS V1-V3) |
insert into iccifnsact values... |
|
| 0.25 |
10.14 |
2.43 |
1.59 |
1 |
cusmmain@HPGICCI1 (TNS V1-V3) |
select CUSM_CUST_ACCT_NO from... |
|
| 0.21 |
27.92 |
0.74 |
0.74 |
1,568 |
|
update seg$ set type#=:4, bloc... |
|
| 0.20 |
3.49 |
5.83 |
5.75 |
51,633 |
load_fnsact@HPGICCI1 (TNS V1-V3) |
insert into ICCIRPYV values (... |
|
| 0.17 |
1.39 |
12.55 |
12.52 |
166,051 |
icci_migact@HPGICCI1 (TNS V1-V3) |
insert into ICCICCS values (:... |
|
| 0.16 |
57.64 |
0.28 |
0.24 |
39 |
cusvaamain@HPGICCI1 (TNS V1-V3) |
BEGIN BEGIN IF (xdb.DBMS... |
|
| 0.14 |
74.58 |
0.19 |
0.14 |
121 |
|
select o.owner#, o.name, o.nam... |
|
| 0.11 |
64.72 |
0.18 |
0.15 |
80 |
cusvaamain@HPGICCI1 (TNS V1-V3) |
SELECT COUNT(*... |
|
| 0.11 |
94.54 |
0.12 |
0.01 |
17 |
|
delete from con$ where owner#=... |
|
| 0.11 |
80.26 |
0.14 |
0.14 |
327 |
|
select intcol#, nvl(pos#, 0), ... |
|
| 0.08 |
19.20 |
0.42 |
0.24 |
1 |
|
begin prvt_hdm.auto_execute( :... |
|
| 0.07 |
54.97 |
0.13 |
0.13 |
83 |
|
select i.obj#, i.ts#, i.file#,... |
|
| 0.06 |
5.22 |
1.13 |
0.72 |
77 |
|
select obj#, type#, flags, ... |
|
| 0.06 |
86.50 |
0.06 |
0.06 |
45 |
|
select owner#, name from con$... |
|
| 0.06 |
8.19 |
0.67 |
0.08 |
1 |
SQL*Plus |
BEGIN dbms_workload_repository... |
|
| 0.04 |
75.69 |
0.06 |
0.06 |
87 |
|
select pos#, intcol#, col#, sp... |
|
| 0.04 |
48.05 |
0.09 |
0.07 |
7 |
|
select file#, block# from seg... |
|
| 0.04 |
8.84 |
0.40 |
0.40 |
6,304 |
|
select type#, blocks, extents,... |
|
| 0.03 |
28.15 |
0.12 |
0.12 |
49 |
|
delete from RecycleBin$ ... |
|
| 0.03 |
66.23 |
0.05 |
0.05 |
85 |
|
select t.ts#, t.file#, t.block... |
|
| 0.03 |
67.03 |
0.05 |
0.05 |
38 |
DBMS_SCHEDULER |
update obj$ set obj#=:6, type#... |
|
| 0.02 |
66.73 |
0.04 |
0.04 |
86 |
|
INSERT INTO sys.wri$_adv_messa... |
|
| 0.02 |
26.94 |
0.09 |
0.09 |
38 |
|
delete from RecycleBin$ ... |
|
| 0.02 |
76.76 |
0.03 |
0.03 |
51 |
|
select con# from con$ where ow... |
|
| 0.02 |
51.91 |
0.05 |
0.05 |
84 |
|
select name, intcol#, segcol#,... |
|
| 0.02 |
0.15 |
14.91 |
11.17 |
5 |
|
DECLARE job BINARY_INTEGER := ... |
|
| 0.02 |
2.12 |
1.00 |
0.99 |
8,784 |
load_fnsact@HPGICCI1 (TNS V1-V3) |
update ICCIFNSACT set BORM_FA... |
|
| 0.02 |
53.82 |
0.03 |
0.03 |
39 |
cusvaamain@HPGICCI1 (TNS V1-V3) |
SELECT count(*) FROM user_poli... |
|
| 0.01 |
0.10 |
14.34 |
14.28 |
172,983 |
load_fnsact@HPGICCI1 (TNS V1-V3) |
update ICCIFNSACT set BORM_AD... |
|
| 0.01 |
8.29 |
0.16 |
0.13 |
421 |
|
update sys.mon_mods$ set inser... |
|
| 0.01 |
1.65 |
0.56 |
0.54 |
2 |
|
insert into wrh$_latch (snap... |
|
| 0.01 |
22.33 |
0.04 |
0.02 |
26 |
load_curmmast@HPGICCI1 (TNS V1-V3) |
insert into ICCICURMMAST valu... |
|
| 0.01 |
0.08 |
7.71 |
7.70 |
172,983 |
load_fnsact@HPGICCI1 (TNS V1-V3) |
select * from ICCIPRODCODE wh... |
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Complete List of SQL Text
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轉自：http://blog.sina.com.cn/s/blog_500033a50100x09b.html