鍦?span lang="EN-US">SQL*PLUS涓紝褰撲綘鎴愬姛鐨勬墽琛屼竴涓狣ML璇彞錛屾瘮濡?/span>
SELECT
,
DELETE
,
UPDATE
,
INSERT錛屼綘
鍙互閫氳繃SQL浼樺寲鍣ㄥ拰璇彞鐨勬墽琛岀粺璁¤嚜鍔ㄧ殑鑾峰緱涓浠芥姤鍛娿傝繖浠芥姤鍛婂浜嶥ML璇彞鐨勬ц兘鐩戞帶鍜岃皟浼橀兘鏄緢鏈夌敤澶勭殑銆傝繖浠芥姤鍛婂氨鏄湰鏂囪璁茬殑AUTOTRACE 鎶ュ憡銆??xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" /?>
聽
閰嶇疆AUTOTRACE鎶ュ憡錛圕onfiguring the AUTOTRACE Report錛?/span>
浣犲彲浠ラ氳繃浠ヤ笅鐨?span lang="EN-US">AUTOTRACE緋葷粺鍙橀噺鏉ラ厤緗瓵UTOTRACE鎶ュ憡. 濡備笅琛細(xì)
Table聽 AUTOTRACE Settings
|
AUTOTRACE Setting
|
Result
|
|
SET AUTOTRACE OFF
|
涓嶈兘鑾峰緱
AUTOTRACE鎶ュ憡
. 榪欐槸榛樿鐨?
|
|
SET AUTOTRACE ON EXPLAIN
|
浠呬粎鏄劇ず浼樺寲鍣ㄦ墽琛岃鍒掔殑
AUTOTRACE
鎶ュ憡
|
|
SET AUTOTRACE ON STATISTICS
|
浠呬粎鏄劇ずSQL璇彞鎵ц鐨勭粺璁＄粨鏋滅殑
AUTOTRACE
鎶ュ憡
|
|
SET AUTOTRACE ON
|
鍖呮嫭涓婇潰涓ら」鍐呭鐨?span lang="EN-US">AUTOTRACE鎶ュ憡
|
|
SET AUTOTRACE TRACEONLY
|
涓?/span>
SET
AUTOTRACE
ON綾諱技
,鎵鏈夌殑緇熻鍜屾暟鎹兘鍦紝浣嗕笉鍙互鎵撳嵃
|
聽
鍏跺疄錛屽鉤鏃舵垜浠簲璇ヨ緝澶氱殑灝辨槸SET AUTOTRACE ON 銆丼ET AUTOTRACE OFF,璋佷細(xì)鍦ㄤ箮澶氱湅涓鐐笰UTOTRACE鎶ュ憡鍛紒
J
瀹夎AUTOTRACE鎶ュ憡錛圫etups Required for the AUTOTRACE Report錛?/span>
瑕佺敤榪欎釜鐗規(guī)э紝鐢ㄦ埛蹇呴』琚祴浜?span lang="EN-US">PLUSTRACE瑙掕壊錛岃孭LUSTRACE瑙掕壊闇瑕丏BA鏉ヨ祴浜堛傚彟澶栵紝璇ョ敤鎴峰繀欏誨垱寤篜LAN_TABLE琛ㄣ?o:p>
I.聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽
棣栧厛鍒涘緩PLUSTRACE瑙掕壊騫朵笖璧嬬粰DBA錛?o:p>
CONNECT sys/sys鈥檚 password AS SYSDBA
@$ORACLE_HOME/sqlplus/admin/plustrce.sql
II.聽聽聽聽聽聽聽聽聽聽聽聽聽
璧嬫潈闄愮粰鐢ㄦ埛
CONNECT / AS SYSDBA
GRANT PLUSTRACE TO USER錛堥璧嬫潈鐨勭敤鎴峰悕錛?
聽
榪欐牱錛屽氨鍙互鍦ㄨ鐢ㄦ埛涓嬭緗?span lang="EN-US">AUTOTRACE鎶ュ憡鐨勬樉紺轟笌鍚︿簡銆?/span>
聽
AUTOTRACE鎶ュ憡涓秹鍙?qiáng)鍒扮殑涓や釜鏂归潰鐨勫唴瀹?/span>
I錛?span style="FONT: 7pt 'Times New Roman'">聽聽聽聽聽聽聽聽聽聽聽聽聽
SQL璇彞鐨勬墽琛岃鍒?o:p>
鎵ц璁″垝灝辨槸SQL浼樺寲鍣ㄦ墽琛岃鍙ョ殑鏌ヨ鎵ц欏哄簭錛屾瘡涓琛岀殑鎵ц璁″垝閮戒細(xì)鏈変釜琛屽彿錛岃繖涓鍙鋒槸榪炵畫鐨?o:p>
II錛?span style="FONT: 7pt 'Times New Roman'">聽聽聽聽聽聽聽聽聽
SQL璇彞鐨勬暟鎹簱緇熻
鏁版嵁搴撶粺璁℃槸鏈嶅姟鍣ㄨ褰曠殑鎵ц褰撳墠鐨勮繖鏉¤鍙ユ墍闇瑕佺殑緋葷粺璧勬簮絳夛紝涓昏鍖呮嫭涓嬭〃鐨勫唴瀹?span lang="EN-US">
|
Database Statistic Name
|
Description
|
|
recursive calls
|
Number of recursive calls generated at both the user and system level. Oracle maintains tables used for internal processing. When Oracle needs to make a change to these tables, it internally generates an internal SQL statement, which in turn generates a recursive call.
|
|
db block gets
|
Number of times a CURRENT block was requested.
|
|
consistent gets
|
Number of times a consistent read was requested for a block.
|
|
physical reads
|
Total number of data blocks read from disk. This number equals the value of "physical reads direct" plus all reads into buffer cache.
|
|
redo size
|
Total amount of redo generated in bytes.
|
|
bytes sent via SQL*Net to client
|
Total number of bytes sent to the client from the foreground processes.
|
|
bytes received via SQL*Net from client
|
Total number of bytes received from the client over Oracle Net.
|
|
SQL*Net roundtrips to/from client
|
Total number of Oracle Net messages sent to and received from the client.
|
|
sorts (memory)
|
Number of sort operations that were performed completely in memory and did not require any disk writes.
|
|
sorts (disk)
|
Number of sort operations that required at least one disk write.
|
|
rows processed
|
Number of rows processed during the operation.
|
聽
綆鍗曚嬌鐢ㄧ殑渚嬪瓙錛?span lang="EN-US">
SQL> show user
USER is "SYS"
錛堟敞錛氬綋鍓嶆槸sysdba鐢ㄦ埛錛?o:p>
錛堟敞錛氬垱寤?span lang="EN-US">PLUSTRACE瑙掕壊騫朵笖璧嬬粰DBA錛?/span>
SQL> start $ORACLE_HOME/sqlplus/admin/plustrce.sql
錛堟敞錛?span lang="EN-US">start 絳変環(huán)浜嶡錛?o:p>
SQL> drop role plustrace;
drop role plustrace
聽聽聽聽聽聽聽聽聽 *
ERROR at line 1:
ORA-01919: role 'PLUSTRACE' does not exist
聽
聽
SQL> create role plustrace;
聽
Role created.
聽
SQL>
SQL> grant select on v_$sesstat to plustrace;
聽
Grant succeeded.
聽
SQL> grant select on v_$statname to plustrace;
聽
Grant succeeded.
SQL>
聽
SQL> grant select on v_$session to plustrace;
聽
Grant succeeded.
聽
SQL> grant plustrace to dba with admin option;
聽
Grant succeeded.
聽
SQL>
SQL> set echo off
錛堟敞錛氳祴瑙掕壊plustrace緇欐墍闇鐢ㄦ埛錛岃繖閲岀敤鎴鋒槸bill錛?o:p>
SQL> grant plustrace to bill;
聽
Grant succeeded.
錛堟敞錛氭帴涓嬫潵錛岀敤bill鐢ㄦ埛榪炴帴錛屾祴璇旳UTOTRACE錛?o:p>
SQL> connect bill/bill鈥檚 password;
Connected.
SQL> show user
USER is "BILL"
(娉細(xì)涓轟簡鐪嬬殑娓呮浜涳紝寤虹珛涓涓祴璇曠殑琛╰est錛岀劧鍚庡療鐪婣UTOTRACE鎶ュ憡)
SQL>聽 create table test(id number(1));
聽
Table created.
聽
SQL> insert into test values(1);
聽
1 row created.
聽
SQL> /
聽
1 row created.
聽
SQL> /
聽
1 row created.
聽
SQL> /
聽
1 row created.
聽
SQL> commit;
聽
Commit complete.
SQL> select * from test;
聽
聽聽聽聽聽聽聽 ID
----------
聽聽聽聽聽聽聽聽 1
聽聽聽聽聽聽聽聽 1
聽聽聽聽聽聽聽聽 1
聽聽聽聽聽聽聽
聽1
聽
SQL> set AUTOTRACE on
SQL> select * from test;
聽
聽聽聽聽聽聽聽 ID
----------
聽聽聽聽聽聽聽聽 1
聽聽聽聽聽聽聽聽 1
聽聽聽聽聽聽聽聽 1
聽聽聽聽聽聽聽聽 1
聽
Execution Plan
----------------------------------------------------------
聽聽 0聽聽聽聽聽 SELECT STATEMENT Optimizer=CHOOSE
聽聽 1聽聽聽 0聽聽 TABLE ACCESS (FULL) OF 'TEST'
聽
聽
聽
聽
Statistics
----------------------------------------------------------
聽聽聽聽聽聽聽聽聽 0聽 recursive calls
聽聽聽聽聽聽聽聽聽 0聽 db block gets
聽聽聽聽聽聽聽聽聽 4聽 consistent gets
聽聽聽聽聽聽聽聽聽 0聽 physical reads
聽聽聽聽聽聽聽聽聽 0聽 redo size
聽聽聽聽聽聽聽 547聽 bytes sent via SQL*Net to client
聽聽聽聽聽聽聽 655聽 bytes received via SQL*Net from client
聽聽聽聽聽聽聽聽聽 2聽 SQL*Net roundtrips to/from client
聽聽聽聽聽聽聽聽聽 0聽 sorts (memory)
聽聽聽聽聽聽聽聽聽 0聽 sorts (disk)
4聽聽聽聽聽聽聽聽
rows processed
聽
涓婇潰鎴戜滑灝卞彲浠ョ湅鍒幫紝褰撲綘璁劇疆浜?span lang="EN-US">set AUTOTRACE on鍚庯紝鎵ц鐩稿簲鐨凞ML璇彞錛屽氨浼?xì)鏈夌浉搴旂殑AUTOTRACE鎶ュ憡鍑虹幇浜嗐傚綋鐒訛紝鎴戜滑鐨勮繖縐嶈緗槸session綰у埆鐨勩傝繖鏍鳳紝鎴戜滑灝卞彲浠ユ牴鎹瓵UTOTRACE鎶ュ憡瀵規(guī)垜浠墽琛岀殑DML璇彞榪涜鍒嗘瀽鍜岃皟浼樹簡錛?br />
杞嚜錛?a >http://dev.csdn.net/develop/article/23/23430.shtm
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