【故障處理】ORA-12545: Connect failed because target host or object does not exist

【故障處理】ORA-12545: Connect failed because target host or object does not exist

1  BLOG文檔結構圖

 

 

 

2  前言部分

2.1  導讀和注意事項

各位技術愛好者，看完本文后，你可以掌握如下的技能，也可以學到一些其它你所不知道的知識，~O(∩_∩)O~：

① 錯誤ORA-12545: Connect failed because target host or object does not exist的一種問題解決

  Tips：

① 本文在ITpub（http://blog.itpub.net/26736162）、博客園(http://www.cnblogs.com/lhrbest)和微信公眾號（xiaomaimiaolhr）有同步更新

② 文章中用到的所有代碼，相關軟件，相關資料請前往小麥苗的雲盤下載（http://blog.itpub.net/26736162/viewspace-1624453/）

③ 若文章代碼格式有錯亂，推薦使用搜狗、360或QQ瀏覽器，也可以下載pdf格式的文檔來查看，pdf文檔下載地址：http://blog.itpub.net/26736162/viewspace-1624453/，另外itpub格式顯示有問題，可以去博客園地址閱讀

④ 本篇BLOG中命令的輸出部分需要特別關注的地方我都用灰色背景和粉紅色字體來表示，比如下邊的例子中，thread 1的最大歸檔日志號為33，thread 2的最大歸檔日志號為43是需要特別關注的地方；而命令一般使用黃色背景和紅色字體標注；對代碼或代碼輸出部分的注釋一般采用藍色字體表示。

  List of Archived Logs in backup set 11

  Thrd Seq     Low SCN    Low Time            Next SCN   Next Time

  ---- ------- ---------- ------------------- ---------- ---------

  1    32      1621589    2015-05-29 11:09:52 1625242    2015-05-29 11:15:48

  1    33      1625242    2015-05-29 11:15:48 1625293    2015-05-29 11:15:58

  2    42      1613951    2015-05-29 10:41:18 1625245    2015-05-29 11:15:49

  2    43      1625245    2015-05-29 11:15:49 1625253    2015-05-29 11:15:53

 

[ZHLHRDB1:root]:/>lsvg -o

T_XDESK_APP1_vg

rootvg

[ZHLHRDB1:root]:/>

00:27:22 SQL> alter tablespace idxtbs read write;

 

====》2097152*512/1024/1024/1024=1G 

 

本文如有錯誤或不完善的地方請大家多多指正，ITPUB留言或QQ皆可，您的批評指正是我寫作的最大動力。

 

 

3  故障分析及解決過程

 

3.1  故障環境介紹

 

項目	source db
db 類型	RAC
db version	11.2.0.3
db 存儲	ASM
OS版本及kernel版本	AIX 64位 6.1.0.0

 

3.2  故障發生現象及報錯信息

同事過來找我說數據庫不能連接，如下情況：

cssp@ZFZHLHRDB1:/cssp$ sqlplus tacc/tacc

 

SQL*Plus: Release 11.2.0.3.0 Production on Fri Aug 12 16:35:42 2016

 

Copyright (c) 1982, 2011, Oracle.  All rights reserved.

 

ERROR:

ORA-12545: Connect failed because target host or object does not exist

 

 

Enter user-name:

ERROR:

ORA-12545: Connect failed because target host or object does not exist

 

注意：以上的連接方式采用了TWO_TASK這個環境變量，在Unix和Linux環境下，可以設置TWO_TASK環境變量，當用戶連接數據庫且沒有指定服務名時，會自動利用TWO_TASK的設置作為環境變量連接數據庫。有關這個環境變量的更多內容可以參考：http://blog.itpub.net/26736162/viewspace-2112274/ 和 http://blog.itpub.net/26736162/viewspace-2112277/

 

 

3.3  故障分析及解決過程

我采用了tnsping、用tnsnames連接和檢查3大網絡配置文件，都沒有問題，如下：

cssp@ZFZHLHRDB1:/cssp$ tnsping oratacc1

 

TNS Ping Utility for IBM/AIX RISC System/6000: Version 11.2.0.3.0 - Production on 12-AUG-2016 16:36:14

 

Copyright (c) 1997, 2011, Oracle.  All rights reserved.

 

Used parameter files:

/oracle/app/oracle/product/11.2.0/db/network/admin/sqlnet.ora

 

 

Used TNSNAMES adapter to resolve the alias

Attempting to contact (DESCRIPTION = (ADDRESS = (PROTOCOL = TCP)(HOST = ZFtaccDB-scan)(PORT = 1521)) (ADDRESS = (PROTOCOL = TCP)(HOST = 22.188.173.15)(PORT = 1521)) (ADDRESS = (PROTOCOL = TCP)(HOST = 22.188.173.16)(PORT = 1521)) (CONNECT_DATA = (SERVER = DEDICATED) (SERVICE_NAME = oratacc1)))

OK (80 msec)

cssp@ZFZHLHRDB1:/cssp$ sqlplus tacc/tacc@oratacc1

 

SQL*Plus: Release 11.2.0.3.0 Production on Fri Aug 12 16:36:25 2016

 

Copyright (c) 1982, 2011, Oracle.  All rights reserved.

 

 

Connected to:

Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production

With the Partitioning, Real Application Clusters, Automatic Storage Management, OLAP,

Data Mining and Real Application Testing options

 

SQL> exit

 

cssp@ZFZHLHRDB1:/cssp$ oerr ora 12545

12545, 00000, "Connect failed because target host or object does not exist"

// *Cause: The address specified is not valid, or the program being

// connected to does not exist.

// *Action: Ensure the ADDRESS parameters have been entered correctly; the

// most likely incorrect parameter is the node name.  Ensure that the

// executable for the server exists (perhaps "oracle" is missing.)

// If the protocol is TCP/IP, edit the TNSNAMES.ORA file to change the

// host name to a numeric IP address and try again.

 

查看環境變量的設置：

cssp@ZFZHLHRDB1:/cssp$ more .profile

#For CICS

export CICS=/usr/lpp/cics

#export LANG=zh_CN.UTF-8

export LANG=en_US

 

#For ORACLE

ORACLE_BASE=/oracle/app/oracle

ORACLE_HOME=/oracle/app/oracle/product/11.2.0/db

TWO_TASK=oratacc1

ORACLE_SID=oratacc1

ORACLE_TERM=vt100

ORACLE_OWNER=oracle

export ORACLE_BASE ORACLE_HOME ORACLE_SID ORACLE_TERM ORACLE_OWNER

 

 

LD_LIBRARY_PATH=/oracle/app/oracle/product/11.2.0/db/lib:/oracle/app/oracle/product/11.2.0/db/lib32

#LD_LIBRARY_PATH=/oracle/app/oracle/product/11.2.0/db/lib32

#export LIBPATH=$LIBPATH:/oracle/app/oracle/product/11.2.0/db/lib

 

NLS_LANG=American_America.ZHS16GBK

ORA_NLS33=/oracle/app/oracle/product/11.2.0/db/nls/data

export PATH=/usr/java5/bin:/cssp/jscs

export PATH=$PATH:/oracle/app/oracle/product/11.2.0/db/OPatch:/oracle/app/oracle/product/11.2.0/db/bin:/bin:/usr/ccs/bin:/usr/bin/X11:/sharebkup/data/peij

 

OPATCH_PLATFORM_ID=212

export LD_LIBRARY_PATH NLS_LANG ORA_NLS33 PATH TMP TMPDIR OPATCH_PLATFORM_ID

export AIXTHREAD_SCOPE=S

umask 022

export DBCA_RAW_CONFIG=/oracle/dbname_raw.conf

export PS1='$LOGNAME@'`hostname`:'$PWD''$ '

export ORA_NL10=$ORACLE_HOME/nls/data

set -o vi

export EDITOR=vi

 

export NLS_LANG=AMERICAN_AMERICA.ZHS16GBK

export NLS_DATE_FORMAT=YYYY-MM-DD

 

export PATH=$PATH:/usr/vac/bin:/var/ifor:/usr/opt/ifor/ls/conf:/usr/lib/cobol/bin:/usr/lpp/cics/bin:/usr/lpp/cics/etc:/usr/lpp/dce/bin:/usr/lpp/mqm/bin:/usr/lpp/mqm/sa

mp/bin:/usr/mqm/samp/bin:$HOME/bin:$ORACLE_HOME/bin:/csspd05u/test/bin:.:/usr/mqm/samp/bin

export LIBPATH=/usr/mqm/lib:$ORACLE_HOME/lib32:$COBDIR/coblib:/usr/lib:/lib:/usr/lpp/cics/lib:/usr/lpp/encina/lib:/usr/lpp/dce/lib:.

export NLSPATH=/usr/lib/nls/msg/%L/%N:/usr/lpp/cics/msg/%L/%N:/usr/lpp/nls/msg/en_US/%N:/usr/lpp/encina/msg/%L/%N:/usr/lpp/dce/lib/nls/msg/%L/%N

 

#For cssp

export JAVA_HOME=/usr/java5_64

export cssp_HOME=$HOME

export CLASSPATH=/csspd05u/CF

 

# PS1='[`hostname`:$LOGNAME:$PWD]'

alias rm='rm -i'

alias lf='ls -aF'

alias l='ls -al'

set -o vi

可以看到上邊的環境變量很亂，尤其PATH的配置有問題，所以我把這個部分的內容整理了一下，最后為：

umask 022

#For CICS

export CICS=/usr/lpp/cics

#export LANG=zh_CN.UTF-8

export LANG=en_US

 

#For ORACLE

export ORACLE_BASE=/oracle/app/oracle

export ORACLE_HOME=/oracle/app/oracle/product/11.2.0/db

export LD_LIBRARY_PATH=/oracle/app/oracle/product/11.2.0/db/lib:/oracle/app/oracle/product/11.2.0/db/lib32

export TWO_TASK=oratacc1

export ORACLE_SID=oratacc1

export ORACLE_TERM=vt100

export ORACLE_OWNER=oracle

export NLS_LANG=AMERICAN_AMERICA.ZHS16GBK

 

 

export ORA_NLS33=/oracle/app/oracle/product/11.2.0/db/nls/data

export OPATCH_PLATFORM_ID=212

export AIXTHREAD_SCOPE=S

 

export DBCA_RAW_CONFIG=/oracle/dbname_raw.conf

export PS1='$LOGNAME@'`hostname`:'$PWD''$ '

export ORA_NL10=$ORACLE_HOME/nls/data

export EDITOR=vi

 

 

export PATH=$PATH:/usr/java5/bin:/cssp/jscs

export PATH=$PATH:/oracle/app/oracle/product/11.2.0/db/OPatch:/oracle/app/oracle/product/11.2.0/db/bin:/bin:/usr/ccs/bin:/usr/bin/X11:/sharebkup/data/peij

export PATH=$PATH:/usr/vac/bin:/var/ifor:/usr/opt/ifor/ls/conf:/usr/lib/cobol/bin:/usr/lpp/cics/bin:/usr/lpp/cics/etc:/usr/lpp/dce/bin:/usr/lpp/mqm/bin:/usr/lpp/mqm/samp/bin:/usr/mqm/samp/bin:$HOME/bin:$ORACLE_HOME/bin:/csspd05u/test/bin:.:/usr/mqm/samp/bin

export LIBPATH=/usr/mqm/lib:$ORACLE_HOME/lib32:$COBDIR/coblib:/usr/lib:/lib:/usr/lpp/cics/lib:/usr/lpp/encina/lib:/usr/lpp/dce/lib:.

export NLSPATH=/usr/lib/nls/msg/%L/%N:/usr/lpp/cics/msg/%L/%N:/usr/lpp/nls/msg/en_US/%N:/usr/lpp/encina/msg/%L/%N:/usr/lpp/dce/lib/nls/msg/%L/%N

 

#For cssp

export JAVA_HOME=/usr/java5_64

export cssp_HOME=$HOME

export CLASSPATH=/csspd05u/CF

 

# PS1='[`hostname`:$LOGNAME:$PWD]'

alias rm='rm -i'

alias lf='ls -aF'

alias l='ls -al'

set -o vi

修改.profile文件后，重新登錄試試：

cssp@ZFZHLHRDB1:/cssp$ . .profile

cssp@ZFZHLHRDB1:/cssp$ sqlplus tacc/tacc

 

SQL*Plus: Release 11.2.0.3.0 Production on Fri Aug 12 16:43:26 2016

 

Copyright (c) 1982, 2011, Oracle.  All rights reserved.

 

 

Connected to:

Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production

With the Partitioning, Real Application Clusters, Automatic Storage Management, OLAP,

Data Mining and Real Application Testing options

 

SQL> exit

Disconnected from Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production

With the Partitioning, Real Application Clusters, Automatic Storage Management, OLAP,

Data Mining and Real Application Testing options

可以正常登陸數據庫了，可見環境變量的配置對sqlplus的登錄有至關重要的作用。

  About Me

..........................................................................................................................................................................................................                        

v 本文作者：小麥苗，只專注於數據庫的技術，更注重技術的運用

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