²é¿´oracle¼àÌýÈÕÖ¾
²ì¿´listener.log È·ÈÏûÓÐÎÊÌâ
# find / -name listener.log
/home/oracle/app/OraHome_1/network/log/listener.log
λÖÃÔÚ$ORACLE_HOME/network/log/listener.log
TNSLSNR for IBM/AIX RISC System/6000: Version 10.2.0.4.0 - Production on 29-DEC-2009 15:12:15
Copyright (c) 1991, 2007, Oracle. All rights reserved.
System parameter file is /home/oracle/app/OraHome_1/network/admin/listener.ora
Log messages written to /home/oracle/app/OraHome_1/network/log/listener.log
Trace information written to /home/oracle/app/OraHome_1/network/trace/listener.trc
Trace level is currently 0
Started with pid=856304
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=data1)(PORT=1521)))
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC0)))
Listener completed notification to CRS on start
TIMESTAMP * CONNECT DATA [* PROTOCOL INFO] * EVENT [* SID] * RETURN CODE
29-DEC-2009 15:12:15 * (CONNECT_DATA=(SERVICE_NAME=L150)(CID=(PROGRAM=c:\program files\ksec\tdcsserverf
orl0150\tdcsserver.exe)(HOST=KSEC01)(USER=SYSTEM))) * (ADDRESS=(PROTOCOL=tcp)(HOST=192.168.200.4)(PORT=
3274)) * establish * L150 * 12514
TNS-12514: TNS:listener does not currently know of service requested in connect descriptor
WARNING: Subscription for node down event still pending
29-DEC-2009 15:12:15 * (CONNECT_DATA=(CID=(PROGRAM=)(HOST=data1)(USER=oracle))(COMMAND=status)(ARGUMENT
S=64)(SERVICE=LISTENER)(VERSION=169870336)) * status * 0
29-DEC-2009 15:12:15 * service_register * L150 * 0
29-DEC-2009 15:12:16 * (CONNECT_DATA=(SERVICE_NAME=L150)(CID=(PROGRAM=D:\TIMMS_WMS\TmEventSvr\TmEventSv
r.exe)(HOST=KSEC01)(USER=Administrator))) * (ADDRESS=(PROTOCOL=tcp)(HOST=192.168.200.4)(PORT=3275)) * e
stablish * L150 * 12528
TNS-12528: TNS:listener: all appropriate instances are blocking new connections
29-DEC-2009 15:12:19 * (CONNECT_DATA=(SERVICE_NAME=L152)(CID=(PROGRAM=C:\TmEventSvr\TmEventSvr.exe)(HOS
T=C)(USER=Administrator))) * (ADDRESS=(PROTOCOL=tcp)(HOST=192.168.200.5)(PORT=3023)) * est
Ïà¹ØÎĵµ£º
ËäȻѧϰJavaºÜ¾ÃÁË£¬×Ô¼ºÒ²Á¬½Ó¹ýһЩÊý¾Ý¿â£¬±ÈÈçmysqlÖ®ÀàµÄ£¬Èç½ñÄØ£¬Ò²Ñ§Ï°ÁËÒ»¶Îʱ¼äµÄOracle£¬È»¶øÄØ£¬½ñÌìÊÇÎÒµÚÒ»´ÎÁ¬½ÓOracle£¬ºÙºÙ£¬Ó¦¸Ã»¹²»ËãÌ«³Ù°É¡£
½ñÌìÄØ£¬Óе㱿׾£¬´ó¼ÒĪЦ£¡
ÎÒÕâÊÇÒ»¸ö²éѯÀý×Ó
Ê×ÏÈ£¬Ô ......
ORACLEÅàѵ(OCA)ÈÏÖ¤½éÉÜ
Oracle10g Certified Associate (OCA) Oracle ÈÏ֤רԱ¡£
¿¼ÊԳɼ¨Í¨¹ýÄÜ»ñµÃOracle¹«Ë¾ÎªÄú°ä·¢µÄÈ«ÇòÈÏÖ¤µÄÓ¢ÎÄOCAÖ¤Êé¡£OCAÓÉOracle¹«Ë¾³öÌâ¡£
¸ÃÖ¤Êé¿É×÷Ϊ¸÷ÆóÊÂÒµµ¥Î»Êý¾Ý¿â¹ÜÀíÈËÔ±ÉϸڵÄÒÀ¾Ý¡£
ĿǰÒѳÉΪ¸÷IT¹«Ë¾¼°Ïà¹ØÆóÒµÕùÏྺƸµÄÊý¾Ý¿â¹ÜÀíά»¤È˲ţ¬ÊÇÊý¾Ý¿âά»¤¹ÜÀíÈËÔ±(DBA) ......
1.°²×°jdk(°æ±¾6u7);
¡¡¡¡2.ÅäÖÃjdk»·¾³±äÁ¿(°²×°Ä¿Â¼:D:\tools\java\jdk1.6.0_07):
¡¡¡¡1). JAVA_HOME = D:\tools\java\jdk1.6.0_07;
¡¡¡¡2). PathµÄ×îÇ°Ãæ×·¼Ó"D:\tools\java\jdk1.6.0_07\bin;D:\tools\java\jre1.6.0_07\bin";
¡¡¡¡3). CLASSPATH = D:\tools\java\jdk1.6.0_07\lib;D:\tools\java\jdk1.6.0_07\lib\too ......
ƽʱÓõıȽ϶àµÄ£¬¾ÍÊÇNVL£¬Ã»ÔõôÔÚÒâÆäËû¼¸¸ö¡£
NVL ¾Í²»ÓÃ˵ÁË£¬¾ÍÊÇÅжϵÚÒ»¸öÊÇ·ñΪNULL£¬ÊǾÍÓõڶþ¸ö´úÌæ£¬²»ÊǾͷµ»ØµÚÒ»¸ö¡£
NVL2 Ò²ÊÇÅжϵÚÒ»¸öÊÇ·ñΪNULL£¬µ«ÊÇ·µ»ØÖµÈ´²»Í¬¡£µÚÒ»¸öΪNULL£¬¾Í·µ»ØµÚÈý¸ö£¬·ñÔò·µ»ØµÚ¶þ¸ö¡£
NULLIF ÅжÏÁ½¸ö²ÎÊýÊÇ·ñÏàµÈ£¬ÏàµÈ·µ»ØNULL£¬·ñÔò·µ»ØµÚÒ»¸ö²ÎÊý¡£
COALESCE Õâ ......