Oracleɾ³ýÓû§±íµÄʵ¼Ê²Ù×÷Ó¦ÓÃ
ÒÔϵÄÎÄÕÂÖ÷Òª½²ÊöµÄÊÇOracleɾ³ýÓû§±íµÄʵ¼Ê²Ù×÷·½°¸£¬±¾ÎÄÖ÷ÒªÊÇÒÔÏà¹ØÊµ¼ÊÓ¦ÓôúÂëµÄ·½Ê½À´Òý³öÆäʵ¼ÊµÄ²Ù×÷²½Ö裬ÒÔϾÍÊÇÎÄÕµľßÌåÄÚÈÝÃèÊö£¬ÍûÄãÔÚä¯ÀÀÖ®ºó»áÓÐËùÊÕ»ñ¡£
1.
select 'Drop table '||table_name||';' from all_tables where owner='Ҫɾ³ýµÄÓû§Ãû£¨×¢ÒâÒª´óд£©';
2.Oracleɾ³ýÓû§±í ÒÔÓû§testΪÀý
for example: declare cursor cur1 is select table_name from dba_tables where owner='TEST'; begin for cur2 in cur1 loop execute immediate 'drop table test.'||cur2.table_name; end loop; end;
3.Õâ¸öɾ³ýµ±Ç°Óû§µÄËùÓжÔÏó(±í¡¢ÊÓͼ¡¢´¥·¢Æ÷¡¢´æ´¢¹ý³Ì¡¢º¯Êý)
DECLARE TYPE name_list IS TABLE OF VARCHAR2(40); TYPE type_list IS TABLE OF VARCHAR2(20); Tab_name name_listname_list:=name_list(); Tab_type type_listtype_list:=type_list(); sql_str VARCHAR2(500); BEGIN sql_str := 'select uo.object_name,uo.object_type from user_objects uo where uo.object_type not in(''INDEX'',''LOB'') order by uo.object_type desc'; EXECUTE IMMEDIATE sql_str BULK COLLECT INTO tab_name,tab_type; FOR i IN Tab_name.FIRST.. Tab_name.LAST LOOP sql_str := 'DROP ' || Tab_type(i) || ' ' || Tab_name(i); EXECUTE IMMEDIATE sql_str; END LOOP; END;
------------------------------------------------------------------------------------------------------------------------------
Ïà¹ØÎĵµ£º
ºÃ¾Ã¾ÍÏë¿´oracleÁË£¬ÓÉÓÚ×Ô¼ºÌ«ÀÁ£¬×î½ü²Å¿ªÊ¼¡£Ï£ÍûÒÔºóÄÜÑø³ÉºÃϰ¹ß¡£
Ò»¡¢oracle 10g ·þÎñÆ÷
1.Ò»¸öoracle 10g·þÎñÆ÷°üº¬Ò»¸öoracleÊý¾Ý¿âºÍÒ»¸öoracle·þÎñÆ÷ʵÀý¡£
2.ÿµ±Êý¾Ý¿âÆô¶¯Ê±ºò£¬ÏµÍ³È«¾ÖÇø£¨SGA£©±»·ÖÅ䣬²¢Æô¶¯ÁËoracleºǫ́½ø³Ì¡£SGAÊÇÓÃÓÚÊý¾Ý¿âÓû§¹²ÏíÊý¾Ý¿âÐÅÏ¢µÄÄÚ´æÇøÓ ......
@echo off
:dosmenu
REM Ñ¡Ôñ²Ëµ¥
echo Windows ·þÎñÆô¶¯»ò¹Ø±Õ By hope 2008Äê2ÔÂ7ÈÕ
echo.
echo [1]Æô¶¯Sql Server2005 [2]¹Ø±ÕSql Server2005
echo [3]Æô¶¯Oracle9i [4]¹Ø±ÕOracle9i
echo.
echo ......
³£Ó÷½·¨ÓÐÒÔϼ¸ÖÖ£º
Ò»¡¢Í¨¹ýPL/SQL Dev¹¤¾ß
1¡¢Ö±½ÓFile->New->Explain Plan Window£¬ÔÚ´°¿ÚÖÐÖ´ÐÐsql¿ÉÒԲ鿴¼Æ»®½á¹û¡£ÆäÖУ¬Cost±íʾcpuµÄÏûºÄ£¬µ¥Î»Îªn%£¬Cardinality±íʾִÐеÄÐÐÊý£¬µÈ¼ÛRows¡£
2¡¢ÏÈÖ´ÐÐ EXPLAIN PLAN FOR select * from tableA ......
¹ú¶¼ºÅÂëÊý¾Ý¿âÉè¼ÆËµÃ÷
V1
Îĵµ±ä¸ü¼Ç¼
ÐòºÅ
±ä¸üÄÚÈÝ˵Ã÷
°æ±¾ºÅ
°æ±¾ÈÕÆÚ
Ö´±ÊÈË
1
³õ¸å
V ......