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瀵煎叆錛?br />
>imp jypx/gzcss@orcl file=d:/1.dmp fromuser=jypx touser=jypx
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SELECT s.username,
聽聽聽聽聽聽 l.OBJECT_ID,
聽聽聽聽聽聽 l.SESSION_ID,
聽聽聽聽聽聽 s.SERIAL#,
聽聽聽聽聽聽 l.ORACLE_USERNAME,
聽聽聽聽聽聽 l.OS_USER_NAME,
聽聽聽聽聽聽 l.PROCESS
聽 FROM V$LOCKED_OBJECT l, V$SESSION S
聽WHERE l.SESSION_ID = S.SID
聽
alter system kill session '239,63272'
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Connected to Oracle Database 10g Enterprise Edition Release 10.2.0.1.0
Connected as ljb
SQL> drop table test;
Table dropped
SQL> create table test tablespace cdma as select * from dba_objects;
Table created
鏌ョ湅涓涓嬭琛ㄥぇ灝忥紝涓?388608涓瓧鑺?
SQL> select segment_name,bytes,tablespace_name from user_segments where segment_name='TEST';
SEGMENT_NAME BYTES TABLESPACE_NAME
------------------------------- -----------------------------------------------------
TEST 8388608 CDMA
SQL> delete from test;
62654 rows deleted
SQL> commit;
Commit complete
紜疄錛屽彂鐜板垹闄ゆ彁浜ゅ悗錛岃〃澶у皬浠嶇劧涓?388608涓瓧鑺備釜瀛楄妭錛屽茍娌￠噴鏀撅紝姝ゆ椂濡傛灉鏌ヨ璇ヨ〃璁板綍錛岃櫧鐒舵湁璁板綍錛屼絾鏄拰鍒氭墠娌¤褰曟煡璇竴鏍鋒參錛岃繖鐐瑰湪鍓嶉潰宸茬粡璇磋繃浜嗐?
SQL> select segment_name,bytes,tablespace_name from user_segments where segment_name='TEST';
SEGMENT_NAME BYTES TABLESPACE_NAME
------------------------------- -----------------------------------------------------
TEST 8388608 CDMA
聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽
閭ｅ鏋滃啀嬈℃彃鍏ュ憿錛熸槸鍚︾┖闂村ぇ灝忔槸8388608鐨勪袱鍊嶅憿錛?
SQL> insert into test select * from dba_objects;
62654 rows inserted
SQL> commit;
Commit complete
鎯婂鐨勫彂鐜幫紝澶у皬浠嶇劧涓鏍?
SQL> select segment_name,bytes,tablespace_name from user_segments where segment_name='TEST';
SEGMENT_NAME BYTES TABLESPACE_NAME
------------------------------- -----------------------------------------------------
TEST 8388608 CDMA
涓嬮潰鐢ㄥ彟澶栦竴涓柟寮忔潵鏌ョ湅錛宻how_space鏄樉紺鴻〃璇︾粏鎯呭喌鐨勮繃紼?
SQL> set serverout on
SQL> exec show_space('TEST','auto');
Total Blocks............................1024
Total Bytes.............................8388608
Unused Blocks...........................125
Unused Bytes............................1024000
Last Used Ext FileId....................77
Last Used Ext BlockId...................820489
Last Used Block.........................3
PL/SQL procedure successfully completed
SQL> delete from test;
62654 rows deleted
SQL> commit;
鍒犻櫎鍐嶆鎻掑叆錛屼粛鐒跺ぇ灝忎竴鏍鳳紝鑰屼笖鎵鏈夌殑緇嗛」閮戒繚鎸佷笉鍙橈紒
Commit complete
SQL> exec show_space('TEST','auto');
Total Blocks............................1024
Total Bytes.............................8388608
Unused Blocks...........................125
Unused Bytes............................1024000
Last Used Ext FileId....................77
Last Used Ext BlockId...................820489
Last Used Block.........................3
PL/SQL procedure successfully completed
鎬葷粨錛歞elete鏄笉鑳界珛鍗抽噴鏀劇┖闂達紝浣嗘槸鍗存槸鍙互琚噸鐢紝涔熷氨鏄煇涓簲鐢ㄧ粡甯稿垹闄ゅ啀緇忓父鎻掑叆錛屽茍涓嶄細鏈夊お澶氱殑絀哄潡錛佸浜庨綣佹彃鍏ュ拰鏇存柊鐨勮〃錛岃繍琛屾參錛屼笉璇ユ鐤戞槸鍥犱負閲岄潰鏈夊お澶氱┖鍧椼?
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闂鎻忚堪錛?br />鏈変袱涓猳ralce鏁版嵁搴?br />SID鍒嗗埆涓?A B
A涓璦鐢ㄦ埛涓嬪惈鏈夎〃objects
B涓惈鏈塨鐢ㄦ埛
浣垮湪B涓敤b鐢ㄦ埛鐧誨綍鍚庢墽琛?br />select * from objects
鑳芥樉紺哄嚭A涓璦.objects鐨勫叏閮ㄥ唴瀹?br />
A涓璦鐢ㄦ埛涓嬪惈鏈夎〃objects
B涓惈鏈塨鐢ㄦ埛
浣垮湪B涓敤b鐢ㄦ埛鐧誨綍鍚庢墽琛?br />select * from objects
鑳芥樉紺哄嚭A涓璦.objects鐨勫叏閮ㄥ唴瀹?br />
闂瑙ｇ瓟錛?/span>
鐢╞鐢ㄦ埛鐧誨綍鍒癇涓紝鎵ц錛?/span>
create public synonym objects for a.objects@A
姝ゆ椂鎵цselect * from objects 灝辮兘鏄劇ず鍑篴.objects鐨勫叏閮ㄥ唴瀹?/span>
聽
闇瑕佹敞鎰忕殑涓鐐癸細
B涓笉鑳藉惈鏈塼able b.objects鍚﹀垯璇彞鍙互鎵ц錛屼絾鏄墽琛宻elect鎿嶄綔鏃舵樉紺虹殑浠嶇劧涓篵.objects鐨勫唴瀹癸紝闇瑕佸厛鎶奲.objects鍒犻櫎鎺夛紝閲嶆柊寤虹珛synonym鍗沖彲銆?/span>
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