Ò׽ؽØÍ¼Èí¼þ¡¢µ¥Îļþ¡¢Ãâ°²×°¡¢´¿ÂÌÉ«¡¢½ö160KB

Oracleά»¤³£ÓÃSQLÓï¾ä»ã×Ü

ÈçºÎÔ¶³ÌÅжÏOracleÊý¾Ý¿âµÄ°²×°Æ½Ì¨
select * from v$version;
²é¿´±í¿Õ¼äµÄʹÓÃÇé¿ö
select sum(bytes)/(1024*1024) as free_space,tablespace_name
from dba_free_space
group by tablespace_name;
SELECT A.TABLESPACE_NAME,A.BYTES TOTAL,B.BYTES USED, C.BYTES FREE,
(B.BYTES*100)/A.BYTES "% USED",(C.BYTES*100)/A.BYTES "% FREE"
from SYS.SM$TS_AVAIL A,SYS.SM$TS_USED B,SYS.SM$TS_FREE C
WHERE A.TABLESPACE_NAME=B.TABLESPACE_NAME AND A.TABLESPACE_NAME=C.TABLESPACE_NAME;
1¡¢²é¿´±í¿Õ¼äµÄÃû³Æ¼°´óС
select t.tablespace_name, round(sum(bytes/(1024*1024)),0) ts_size
from dba_tablespaces t, dba_data_files d
where t.tablespace_name = d.tablespace_name
group by t.tablespace_name;
2¡¢²é¿´±í¿Õ¼äÎïÀíÎļþµÄÃû³Æ¼°´óС
select tablespace_name, file_id, file_name,
round(bytes/(1024*1024),0) total_space
from dba_data_files
order by tablespace_name;
3¡¢²é¿´»Ø¹ö¶ÎÃû³Æ¼°´óС
select segment_name, tablespace_name, r.status,
(initial_extent/1024) InitialExtent,(next_extent/1024) NextExtent,
max_extents, v.curext CurExtent
from dba_rollback_segs r, v$rollstat v
Where r.segment_id = v.usn(+)
order by segment_name ;
4¡¢²é¿´¿ØÖÆÎļþ
select name from v$controlfile;
5¡¢²é¿´ÈÕÖ¾Îļþ
select member from v$logfile;
6¡¢²é¿´±í¿Õ¼äµÄʹÓÃÇé¿ö
select sum(bytes)/(1024*1024) as free_space,tablespace_name
from dba_free_space
group by tablespace_name;
SELECT A.TABLESPACE_NAME,A.BYTES TOTAL,B.BYTES USED, C.BYTES FREE,
(B.BYTES*100)/A.BYTES "% USED",(C.BYTES*100)/A.BYTES "% FREE"
from SYS.SM$TS_AVAIL A,SYS.SM$TS_USED B,SYS.SM$TS_FREE C
WHERE A.TABLESPACE_NAME=B.TABLESPACE_NAME AND A.TABLESPACE_NAME=C.TABLESPACE_NAME;
7¡¢²é¿´Êý¾Ý¿â¿â¶ÔÏó
select owner, object_type, status, count(*) count# from all_objects group by owner, object_type, status;
8¡¢²é¿´Êý¾Ý¿âµÄ°æ±¾¡¡
Select version from Product_component_version
Where SUBSTR(PRODUCT,1,6)='Oracle';
9¡¢²é¿´Êý¾Ý¿âµÄ´´½¨ÈÕÆÚºÍ¹éµµ·½Ê½
Select Created, Log_Mode, Log_Mode from V$Database;
10¡¢ÈçºÎÔ¶³ÌÅжÏOracleÊý¾Ý¿âµÄ°²×°Æ½Ì¨
select * from v$ve


Ïà¹ØÎĵµ£º

oracle¸´Ï°£¨Ò»£© Ö®OracleÌåϵ½á¹¹

      ѧϰOracle DBAÒ²°ë¸ö¶àѧÆÚÁË£¬½ñÌìÃÍÈ»²Å·¢ÏÖ£¬Ô­À´ÎÒµÄÊ黹ÊǺÜеģ¬ÉϿβÙ×÷ʱºòÒ²Ö»ÊÇÖªµÀ´ó¸ÅÔõô×ö£¬µ«ÊÇÒªÕæµÄÈ«²¿×Ô¼º×ö£¬¶ø²»È¥·­Ê黹ÊÇÓÐÒ»¶¨µÄÄѶȵģ¬ËùÒÔÄØ£¬½ñÌ쿪ʼ½«DBA´ÓÍ·¸´Ï°Ò»±é£¬Í¬Ê±ÔÙ²Ù×÷Ò»±é¡£
      µÚÒ»Õ£¬Ñ§µÄÊÇOracleµÄÌåϵ½á¹¹£ ......

Àμǣ¡SQL ServerÊý¾Ý¿â¿ª·¢µÄ¶þʮһÌõ¾ü¹æ(SQLÊÕ²Ø)

Èç¹ûÄãÕýÔÚ¸ºÔðÒ»¸ö»ùÓÚSQL ServerµÄÏîÄ¿£¬»òÕßÄã¸Õ¸Õ½Ó´¥SQL Server£¬Äã¶¼ÓпÉÄÜÒªÃæÁÙһЩÊý¾Ý¿âÐÔÄܵÄÎÊÌ⣬ÕâÆªÎÄÕ»áΪÄãÌṩһЩÓÐÓõÄÖ¸µ¼£¨ÆäÖдó¶àÊýÒ²¿ÉÒÔÓÃÓÚÆäËüµÄDBMS£©¡£
ÔÚÕâÀÎÒ²»´òËã½éÉÜʹÓÃSQL ServerµÄÇÏÃÅ£¬Ò²²»ÄÜÌṩһ¸ö°üÖΰٲ¡µÄ·½°¸£¬ÎÒËù×öµÄÊÇ×ܽáһЩ¾­Ñé----¹ØÓÚÈçºÎÐγÉÒ»¸öºÃµÄÉè¼Æ¡£Õ ......

SQL JOINÖ®ÍêÈ«Ó÷¨

×î½üÔÚ×ömysqlµÄÐÔÄÜÓÇ»¯£¬×öµ½¶à±íÁ¬½Ó²éѯ£¬±È½ÏÍ·ÌÛ£¬¿´ÁËһЩjoinµÄ×ÊÁÏ£¬ÖÕÓڸ㶨£¬ÕâÀï·ÖÏí³öÀ´£¡
ÍâÁª½Ó¡£ÍâÁª½Ó¿ÉÒÔÊÇ×óÏòÍâÁª½Ó¡¢ÓÒÏòÍâÁª½Ó»òÍêÕûÍⲿÁª½Ó¡£    
  ÔÚ   from   ×Ó¾äÖÐÖ¸¶¨ÍâÁª½Óʱ£¬¿ÉÒÔÓÉÏÂÁм¸×鹨¼ü×ÖÖеÄÒ»×éÖ¸¶¨£º  
 &n ......

Windows Mobile Á¬½ÓSQL SERVERÊý¾Ý¿â SqlClient

»·¾³´î½¨£º
   windows MobileµÄ¿ª·¢»·¾³µÄ´î½¨(Ïêϸ˵Ã÷)
²½Öè¸ÅÊö:
1£ºPCÉϵÄSQL
SERVER
ÐèÒª¿ªÆôÔ¶³ÌÁ¬½Ó¡£
2£ºMoblieÄ£ÄâÆ÷ÐèҪͨ¹ýActiveSyncÁ¬½Ó£¬Ê¹ÆäÄܹ»Í¨¹ýPCÁ¬Íø¡£(Èç¹ûÊÇÊÖ»úµÄ»°£¬ÐèÒªÄܹ»Í¨¹ýÎÞÏßÍøÂçÁ¬È뻥ÁªÍø)
Ïêϸ˵Ã÷£º
µÚÒ»²½:SQL SERVERÒ»¶¨Òª¿ªÆôÔ¶³ÌÁ¬½Ó
    1 ......

SQL ServerÖи÷Êý¾ÝÀàÐͳߴ磨Byte£©


Êý¾ÝÀàÐÍ
´æ´¢³ß´ç
ÃèÊö
bigint
8 bytes
¡¡
integer
4 bytes
¡¡
smallint
2 bytes
¡¡
tinyint
1 byte
¡¡
bit
1 byte
¡¡
numeric(p,s)
decimal(p,s)
dec(p,s)
19 bytes
¡¡
money
8 bytes
¡¡
float
8 bytes
¡¡
real
4 bytes
¡¡
datetime
8 bytes
¡¡
nvarchar(n)
2*³¤¶È bytes
¡¡
nte ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ