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S: use mydatabase
O: connect username/password@DBAlias
conn username/password@DBAlias 2. ÔÚOracleÖÐʹÓÃDual, DualÊÇOracleÒ»¸öÌØÓеÄÐéÄâ±í, OracleÖкܶàϵͳµÄ±äÁ¿ºÍº¯Êý¶¼¿ÉÒÔͨ¹ýDualÖлñµÃ
S: select getdate();
O: select sysdate from dual; 3. Select IntoºÍInsert Óï¾äµÄʹÓÃ, ÔÚSQL ServerÖеÄSelect IntoÓï¾äÔÚOracleÖÐÒ»°ãÊÇInsert into¡select¡, ÁíÍâ2¸öÊý¾Ý¿â¶¼Ö§³Ö±ê×¼µÄSQL, д·¨ÉÏÂÔÓÐÇø±ð
S: select getdate() mycolumn into mytable;
Insert mytable values(¡®more text¡¯);
O: insert into mytable select getdate() mycolumn from dual
insert into mytable (mycolumn) values(sysdate); 4. UpdateÓï¾ä
S: update mytable set mycolumn=myothertable.mycolumn
from mytable,myothertable
where mytable.mycolumn like 'MY%' and myothertable.myothercolumn='some text';
O: update mytable set mycolumn=
(select a.mycolumn from myothertable a
where myothertable.myothercolumn='some text')
where mytable.mycolumn like 'MY%'; 5. DeleteÓï¾ä
S: delete mytable where mycolumn like 'some%';
O: delete from mytable where mycolumn like 'some%'; 6. ʹÓÿª·¢¹ÜÀíµÄÈí¼þ
S: isql
osql: for queries developed in SQL Analyzer
SQL Server Management Studio Express ͼÐλ¯¹ÜÀí¹¤¾ß
O: sqlplus
PL/SQL Developer ͼÐλ¯¿ª·¢¹ÜÀí¹¤¾ß
TOAD ͼÐλ¯¿ª·¢¹ÜÀí¹¤¾ß
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The DB File Scattered Read wait event generally indicates waits related to full table scans or fast
full index scans. As full table scans are pulled into memory, they are scattered throughout the
buffer cache, since it is usually unlikely that they fall into contiguous buffers. A large numb ......
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create tablespace Ãû³Æ
(
datafile='·¾¶\Ãû³Æ.ora',
size='50M',
autoextend='on'
)
/
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create temporary tablespace Ãû³Æ
(
tempfile='·¾¶\Ãû³Æ.ora',
size='50M',
autoextend='on'
)
/
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create user Óû§Ãû idtenified by ÃÜÂë
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ORCL190 = //ºìÉ«²¿ÃÅΪÁ¬½Ó¼àÌýÃû×Ö
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.1.190)(PORT = 1521)) //ºìÉ«²¿ÃÅΪ·þÎñÆ÷ËùÔÚIPµØÖ· 1521Ϊ¶Ë¿ÚºÅ
(CONNECT_DATA ......