ÔÚOracle Öвéѯij¸ö×ֶδæÔÚÓÚÄö±í (ת)
Èç¹û²éѯÕû¿âµÄ»°µÃÒÔDBAȨÏÞ²éѯÊý¾Ý×Öµädba_tab_columns
·ÇDBAÓû§Ö»Äܲ鿴×Ô¼ºÓжÁȡȨÏ޵ıí
¿ÉÒÔÕâÑùд²éѯ
select owner, table_name
from dba_tab_columns
where lower(column_name)='firstname';
²éѯ³öÄÄЩ±í°üº¬firstname×Ö¶ÎÒÔ¼°ÕâЩ±íÊôÓÚÄĸöÓû§
×¢£ºdba_tab_columnsÊÇÒ»¸öÊôÓÚSYSÓû§µÄÒ»¸öView
Ïà¹ØÎĵµ£º
£¨Ò»£©Data blocks £¬Extents£¬Segment
Õâ¾ÍÊÇËûÃÇÖ®¼äµÄÂß¼½á¹¹¡£
ÏÈ¿´Data blocks£¨Ò²½ÐÂß¼¿é£¬oracle¿é£¬Ò³£©°É£¬oracle´æ´¢Êý¾Ý¶¼ÊÇÔÚÕâЩÊý¾Ý¿éÖУ¬Ò»¸öÊý¾Ý¿éÊÇ´ÅÅÌÉÏÊý¾Ý¿âÎïÀí¿Õ¼äһϵÁÐÎïÀí×Ö½ÚµÄ×é³É¡£
±ÈData blocks¸ü¸ßÒ»²ãµÄÂß¼Êý¾Ý¿é¿Õ¼äÊÇe ......
1¡¢ÐÞ¸ÄOracle×î´óÁ¬½ÓÊýµÄ·½·¨
a¡¢ÒÔsysdbaÉí·ÝµÇ½PL/SQL »òÕß Worksheet
b¡¢²éѯĿǰÁ¬½ÓÊý
show parameter processes;
c¡¢¸ü¸ÄϵͳÁ¬½ÓÊý
alter system set processes=1000 scope=spfile;
......
½â¾ö·½°¸£º
select session_id from v$locked_object; --Ê×Ïȵõ½±»Ëø¶ÔÏóµÄsession_id
SELECT sid, serial#, username, osuser from v$session where sid = session_id; --ͨ¹ýÉÏÃæµÃµ½µÄsession_idȥȡµÃv$sessionµÄsidºÍserial#£¬È»ºó¶Ô¸Ã½ø³Ì½øÐÐÖÕÖ¹¡£
&n ......
select dbtimezone from dual ; --²é¿´Êý¾Ý¿âÊ±Çø
select sessiontimezone from dual ; --²é¿´»á»°Ê±Çø
1.select u.name || '.' || o.name || '.' || c.name TSLTZcolumn
from sys.obj$ o, sys.col$ c, sys.user$ u
&nbs ......
¤½¤ÎËû¤Î¥ª¥Ú¥ìー¥Æ¥£¥ó¥°?¥·¥¹¥Æ¥à¤Ë¤ª¤±¤ë¥Çー¥¿¥Ùー¥¹¤ÎÆð動¤ÈÍ£Ö¹¤Î×Ô動»¯
dbstart¤ª¤è¤Ódbshut¥¹¥¯¥ê¥×¥È¤òʹÓ䷤ƥÇー¥¿¥Ùー¥¹¤ÎÆð動¤ÈÍ£Ö¹¤ò×Ô動»¯¤¹¤ë¤Ë¤Ï¡¢´Î¤ÎÊÖ順¤ò実ÐФ·¤Þ¤¹¡£
root¥æー¥¶ー¤Ç¥í¥°¥¤¥ó¤·¤Þ¤¹¡£
¥×¥é¥Ã¥È¥Õ ......