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

Oracle ʵÏÖÐÐÁÐת»»

SQL> DESC TEST  ²âÊÔ±í:        Name    Type            Nullable    Default Comments
       ----     ------------         --------      -------     --------
       A        NUMBER           Y                        
       B        VARCHAR2(20) Y          SQL> select * from test;                  A B
       ---------- --------------------
                 1 a
                 1 b
                 1 c
                 1 d
                 1 e
                 2 a
                 2 b
                 3 a
         


Ïà¹ØÎĵµ£º

Oracle TNSLSNR Full Client

Most of admins neglect setting password on TNSlsnr Clients for Oracle databases. Oracle ensures that you can either connect to TNSlsnr on a localhost or through mapping to a remote Oracle database using .ora files.
This is not the case anymore Based on Jwa perl client.
This client is a FULL clie ......

ORACLE Êý¾Ý¿âÃû¡¢ÊµÀýÃû¡¢ORACLE_SIDµÄÇø±ð

Êý¾Ý¿âÃû(DB_NAME)¡¢ÊµÀýÃû(Instance_name)¡¢ÒÔ¼°²Ù×÷ϵͳ»·¾³±äÁ¿(ORACLE_SID)
ÔÚORACLE7¡¢8Êý¾Ý¿âÖÐÖ»ÓÐÊý¾Ý¿âÃû(db_name)ºÍÊý¾Ý¿âʵÀýÃû(instance_name)¡£ÔÚORACLE8i¡¢9iÖгöÏÖÁËеIJÎÊý£¬¼´Êý¾Ý¿âÓòÃû(db_domain)¡¢·þÎñÃû(service_name)¡¢ÒÔ¼°²Ù×÷ϵͳ»·¾³±äÁ¿(ORACLE_SID)¡£ÕâЩ¶¼´æÔÚÓÚͬһ¸öÊý¾Ý¿âÖеıêʶ£¬ÓÃÓÚÇ ......

Oracle DB Link½éÉÜ

1¡£»ù±¾¸ÅÄ

Êý¾Ý¿âÁ¬½Ó´®Ö÷ÒªÓÃÓÚ½¨Á¢¶ÔÔ¶³ÌÊý¾Ý¿âµÄ·ÃÎÊ·½·¨£¬¿ÉÒÔÖ±½Ó¶ÁȡԶ³ÌOracleµÄÊý¾Ý£¬»òÕßÖ±½ÓÐ޸ġ£Êý¾Ý¿âÁ¬½Ó´®¿ÉÒÔÊǹ«ÓÃÁ¬½ÓPUBLIC»òÕß˽ÓÐÁ¬½ÓPRIVATE¡£ÕâÒ»µãºÍͬÒå´ÊºÜÏàÏñ¡£

1¡£´´½¨Óï·¨£º

CREATE DATABASE LINK TEST CONNECT TO USERNAME IDENTIFIED BY PASSWORD
USING 'CONNECT_STRING ......

oracle¶¨Ê±ÈÎÎñ£¨dbms_job£©

½ñÌì×ܽáÏÂoracleµÄÈÎÎñ¶ÓÁйÜÀíÆ÷(job queue ),ÒÔºóÒ²·½±ã²éѯ.
 ÎÒÃÇÒª×ö¶¨Ê±ÈÎÎñʱ,ÓÐÁ½ÖÖ°ì·¨
Ò»ÖÖÊÇ: ²Ù×÷ϵͳµÄ¶¨Ê±,winµÄ¶¨Ê±ÈÎÎñ,unixµÄcrontab
Ò»ÖÖÊÇ: Êý¾Ý¿â¼¶µÄ¶¨Ê±,ËýµÄЧÂʸü¸ß,
ÔÙÓдóÁ¿µÄ±í¼¶²Ù×÷ʱ,½¨ÒéÓÃÊý¾Ý¿â±¾ÉíµÄjob queue,ÕâÑù·½±ã,ЧÂʸß;Èç¹ûÓÃϵͳ¼¶¶¨Ê±,
»áÔö¼ÓºÜ¶à±à³Ì¹¤×÷,³É±¾Ôö¼Ó ......

oracle ±íÖвåÈë¶àÐÐ

·½·¨Ò»£º
SQL>create table aa(a number);
´´½¨³É¹¦¡£
SQL> select * from aa;
A
--------
2
SQL>
SQL> insert all
2 into aa values(1)
3 into aa values(2)
4 select * from dual;
ÒÑ´´½¨2ÐС£
SQL> commit;
Ìá½»Íê³É¡£
SQL> select * from aa;
A
----------
2
1
2
·½·¨¶þ£º
S ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ