¹ØÓÚORACLE¼àÌý·þÎñÎÞ·¨Æô¶¯µÄÎÊÌâ
½ñÌìµçÄÔÄûؼң¬Æô¶¯oracleÊý¾Ý¿âµÄ¼àÌý·þÎñʱ·¢ÏÖÎÞ·¨Æô¶¯¡£¸ø³öµÄ´íÎóÌáʾÊÇ˵£¬Õâ¸ö·þÎñÆô¶¯ÁËÓÖÍ£Ö¹ÁË£¬²»ÖªµÀÊÇΪʲô¡£ÒòΪÔÚѧУµÄʱºòÓÃÊÇûÓÐÎÊÌâµÄ¡£ÎÒÏëÓ¦¸ÃÊÇÒòΪipµÄÊÇÎÊÌâ¡£ÔÚÍøÉϲéÁËһϣºÄãÊÇ·ñÐÞ¸ÄÄãµÄ»úÆ÷Ãû»òIPµØÖ·£¬Èç¹ûÓÐÐ޸쬰ÑORACLE\ora81\network\admin\listener.oraÎļþÖеÄhostÐÞ¸ÄΪлúÆ÷Ãû»òIP¡£ÎÒÓõÄÊÇoracle 10g£¬listener.oraµÄĿ¼ÔÚD:\oracle\product\10.1.0\db_1\NETWORK\ADMINÏ¡£listener.oraÎļþµÄÄÚÈÝÈçÏ£º
# listener.ora Network Configuration File: d:\oracle\product\10.1.0\db_1\network\admin\listener.ora
# Generated by Oracle configuration tools.
SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(SID_NAME = PLSExtProc)
(ORACLE_HOME = d:\oracle\product\10.1.0\db_1)
(PROGRAM = extproc)
)
)
LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC))
)
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.0.5)(PORT = 1521))
)
)
)
ÐÞ¸ÄΪ£º
# listener.ora Network Configuration File: d:\oracle\product\10.1.0\db_1\network\admin\listener.ora
# Generated by Oracle configuration tools.
SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(SID_NAME = PLSExtProc)
(ORACLE_HOME = d:\oracle\product\10.1.0\db_1)
(PROGRAM = extproc)
)
)
LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC))
Ïà¹ØÎĵµ£º
ORACLE內²¿º¯數ƪ ×Ö·û´®
204. ÈçºÎµÃµ½×Ö·û´®µÄµÚÒ»個×Ö·ûµÄASCIIÖµ?
ASCII(CHAR)
SELECT ASCII('ABCDE') from DUAL;
結¹û: 65
205. ÈçºÎµÃµ½數ÖµNÖ¸¶¨µÄ×Ö·û?
CHR(N)
SELECT CHR(68) from DUAL;
結¹û: D
206.  ......
ORACLEÄÚ²¿º¯Êýƪ
¡¡¡¡ 255. CHARTOROWID(CHAR)
¡¡¡¡ ½«°üº¬ÍⲿÓï·¨ROWIDµÄCHAR»òVARCHAR2Êýֵת»»ÎªÄÚ²¿µÄ¶þ½øÖÆÓï·¨,²ÎÊýCHAR±ØÐëÊǰüº¬ÍⲿÓï·¨µÄROWIDµÄ18×Ö·ûµÄ×Ö·û´®.
¡¡¡¡ SELECT NAME from BSEMPMS WHERE ROWID=CHARTOROWID('AAAAfZAABAAACp8AAO');
¡¡¡¡ NAME : LEIXUE
¡¡¡¡ 256. CONVERT(CHAR,DEST_CHA ......
9I¹ÜÀíµÄV$ÊÓͼ¡£
¡¡¡¡281. V$ACCESS
¡¡¡¡ÏÔʾµ±Ç°±»Ëø¶¨µÄÊý¾Ý¿âÖеĶÔÏó¼°ÕýÔÚ·ÃÎÊËûÃǵĻỰ.
¡¡¡¡282. V$ACTIVE_INSTANCES
¡¡¡¡Îªµ±Ç°°²×°µÄÊý¾Ý¿âÖгöÏÖµÄËùÓÐʵÀý½¨Á¢´ÓʵÀýÃûµ½ÊµÀýºÅµÄÓ³Ïñ.
¡¡¡¡283. V$ACTIVE_SESS_POOL_MTH
¡¡¡¡ËùÓлµÄ»á»°³Ø×ÊÔ´·ÖÅä·½·¨.
¡¡¡¡284. V$AQ
¡¡¡¡µ±Ç°Êý¾Ý¿âÖеĶÓÁеÄͳ¼ ......
±¾ÎĽÚÑ¡×Ô¡¶Oracle DBAÊּǗ—Êý¾Ý¿âÕï¶Ï°¸ÀýÓëÐÔÄÜÓÅ»¯Êµ¼ù¡·µÚ2Õ“YangtingkunµÄDBA¹¤×÷Êּǔ £¨×÷ÕߣºÑîÍ¢çû£©
V$SQLÊÓͼÏÔʾ½á¹ûÒì³£µÄÕï¶Ï
ÓÐÒ»´ÎÅöµ½Ò»¸öºÜÆæ¹ÖµÄÎÊÌ⣬ÔÚ¼ì²é»á»°ËùÖ´ÐеÄSQLʱ£¬·¢ÏÖV$SQLÊÓͼÖÐSQL_TEXTÁÐÖеÄÊý¾ÝÊDz»Õý³£µÄ¡£
ÓÉÓÚV$SQLÊǶ¯Ì¬ÐÔÄÜÊÓͼ£¬ÀïÃæ±£´æµÄÊǵ± ......