oracle DBMS_LOCK.SLEEP()µÄʹÓÃ
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¡¢執ÐÐ ORACLE_HOME/rdbms/admin/dbmslock.sql À´´´½¨ dbms_lock;
-ÔÚDBAÉí·ÖÏÂgrant execute on dbms_lock to USERNAME;
-執ÐÐ測試´ú碼
begin
dbms_output.put_line(to_char(sysdate,'yyyymmddhh24miss'));
dbms_lock.sleep(60);
dbms_output.put_line(to_char(sysdate,'yyyymmddhh24miss'));
end;
---->
20090728092027
20090728092129
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1\´´½¨²âÊÔ±í
CREATE TABLE tbl_tt (ID NUMBER(4),addtime DATE);
2\¿ªÊ¼²âÊÔ
BEGIN
FOR i IN 1 .. 10
LOOP
INSERT INTO tbl_tt
VALUES (i, SYSDATE);
COMMIT;
DBMS_LOCK.sleep (5);
END LOOP;
END;
/
3\²éѯÊý¾Ý
ID ADDTIME
---------- -------------------
1 2008-01-14 13:10:20
2 2008-01-14 13:10:26
3 2008-01-14 13:10:31
4 2008-01-14 13:10:36
5 2008-01-14 13:10:41
6 2008-01-14 13:10:46
7 2008-01-14 13:10:51
8 2008-01-14 13:10:56
9 2008-01-14 13:11:01
10 2008-01-14 13:11:07
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select paddr,name,description
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order by paddr desc
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Oracle logically divides the database into a smaller units to manage ,store,and retreive
data efficently.
Tablespace\Blocks\Extents\segment\
ÓÐËÄÖÖsegment:
data segment¡¢Index segment¡¢Temporay segment¡¢Rollback Segment
temporary segment:
Ar ......
The following items are available in the network listener configuration file (listener.ora).
* Listener Address Section
* SID_LIST_listener_name Static Service Section
* Control Parameters
The listener.ora file is located in $ORACLE_HOME/n ......
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groupadd dba
groupadd oinstall
useradd oracle -g oinstall -G dba
passwd oracle
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vi /etc/redhat-release
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Red Hat Enterprise Linux AS release 4 (Nahant Update 4)
#Red Hat Enterprise Linux Server release 5.4 (Tikanga)
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