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from: http://tkyte.blogspot.com/
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鍑虹幇鐨勬槸涓枃鐨勫瓧絎︽棩鏈燂紝濡備笅錛氭槦鏈熶簲 12鏈?19 13:53:15 2008
鏄瓧絎﹂泦鐨勯棶棰橈紝瑙ｅ喅錛?br /> alter session set nls_date_language = 'American'
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鐩綍
涓銆?nbsp; 鍓嶈█... 4
浜屻?nbsp; 鎬濊礬... 4
涓夈?nbsp; vmstat鑴氭湰鍙婃楠?.. 4
1. 瀹夎statspack. 4
2. 鍒涘緩stats$vmstat琛?.. 4
3. 鍒涘緩vmstat鐩綍... 6
4. 鍒涘緩get_vmstat.ksh鑴氭湰... 6
5. 鍒涘緩run_vmstat.ksh鑴氭湰... 8
6. 鍒涘緩crontab浣滀笟錛屽畾鏃舵墽琛宺un_vmstat.ksh鑴氭湰... 9
7. 鍒嗘瀽鏁版嵁... 9
1) 寮傚父鎶ュ憡... 9
2) 姣忓皬鏃惰秼鍔挎姤鍛?.. 13
3) 鍛ㄨ秼鍔挎姤鍛?.. 14
4) 闀挎湡瓚嬪娍鎶ュ憡... 14
鍥涖?nbsp; 浣跨敤Excel鐢熸垚瓚嬪娍鍥?.. 15
浜斻?nbsp; 鍙傝冭祫鏂?.. 15
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--REF: oracle expert....
scott@ORCL> select * from dual where null=null;鏈夊畾琛?br />
scott@ORCL> select * from dual where null <> null;鏈夊畾琛?br />
scott@ORCL> select * from dual where null is null;D-X]]>
scott@ORCL> select count(*) from t; COUNT(*)---------- 28scott@ORCL> begin 2 for x in (select * from t) 3 loop 4 insert into t values (x.username,x.user_id,x.created); 5 end loop; 6 end; 7 /PL/SQL 榪囩▼宸叉垚鍔熷畬鎴愩?br />
scott@ORCL> select count(*) from t; COUNT(*)---------- 56
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SET SERVEROUTPUT ON;DECLARE stock_price NUMBER := 9.73; net_earnings NUMBER := 0; pe_ratio NUMBER;BEGIN-- Calculation might cause division-by-zero error. pe_ratio := stock_price / net_earnings; dbms_output.put_line('Price/earnings ratio = ' || pe_ratio);EXCEPTION -- exception handlers begin-- Only one of the WHEN blocks is executed. WHEN ZERO_DIVIDE THEN -- handles 'division by zero' error dbms_output.put_line('Company must have had zero earnings.'); pe_ratio := null; WHEN OTHERS THEN -- handles all other errors dbms_output.put_line('Some other kind of error occurred.'); pe_ratio := null;END; -- exception handlers and block end here/
ref : http://www.sc.ehu.es/siwebso/KZCC/Oracle_10g_Documentacion/appdev.101/b10807/07_errs.htm
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2,run @spcreate.sql;
鎸夋彁紺鴻緭鍏ュ繀瑕佺殑淇℃伅銆?br /> 濡傛灉杈撳叆閿欒鎴栬呭彇娑堜簡瀹夎錛屼笅嬈″畨瑁呭墠闇瑕佸厛鎵ц spdrop.sql鍒犻櫎鐢ㄦ埛鍜屽凡瀹夎鐨勮鍥俱?
錛嶏紞SPCPKG complete. Please check spcpkg.lis for any errors.
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define _editor=notepadset serveroutput on size 1000000set trimspool onset long 5000set linesize 100set pagesize 9999column plan_plus_exp format a80column global_name new_value gnameset termout offdefine gname=idlecolumn global_name new_value gnameselect lower(user) || '@' || substr( global_name, 1, decode( dot, 0,length(global_name), dot-1) ) global_name from (select global_name, instr(global_name,'.') dot from global_name );set sqlprompt '&gname> 'set termout on define _editor: sqlplus榛樿鐨勭紪杈戝櫒錛?br /> set serveroutput on size 1000000錛氶粯璁ゆ墦寮DBMS_OUTPUT,灝嗙紦鍐插尯璁劇疆灝藉彲鑳藉ぇ錛?br />
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grant select on v$session to scott
*
絎?1 琛屽嚭鐜伴敊璇?
ORA-02030: 鍙兘浠庡浐瀹氱殑琛?瑙嗗浘鏌ヨ
瑙ｅ喅錛?br /> grant select on v_$session to scott;
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'/-.,''''#' ,' '),' ')
from tidvnmst
where .....
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SELECT DECODE (value,<if this value>,<return this value>,
< if this value>,<return this value>,
....)
FROM dual;
SELECT program_id, DECODE(customer_id, 'AAL', 'American Airlines', 'ILC', 'Intl. Leasing Corp.', 'NWO', 'Northwest Orient', 'SAL', 'Southwest Airlines', 'SWA', 'Sweptwing Airlines', 'USAF', 'U.S. Air Force') AIRLINE, delivered_dateFROM airplanesWHERE ROWNUM < 11; ]]>