CentOS 下安装Oracle 11g 报错ORA-01034: ORACLE not available

松1246

　　Linux+Oracle11G报错:

• java.sql.SQLException: ORA-01034: ORACLE not available   
  
• ORA-27101: shared memory realm does not exist   
  
• Linux Error: 2: No such file or directory   
  

　　解决 方法：
　　1、查看环境变量.bash_profile文件如下，查看oracle 实例名
　　[oracle@wpj ~]$ vi ~/.bash_profile

　　
　　# .bash_profile
　　# Get the aliases and functions
if [ -f ~/.bashrc ]; then
        . ~/.bashrc
fi
　　# User specific environment and startup programs
　　PATH=$PATH:$HOME/bin
exportORACLE_SID=orcl
export ORACLE_BASE=/u01/app/oracle
export ORACLE_HOME=$ORACLE_BASE/product/11.2.0/db_1
export ORACLE_ADMIN=$ORACLE_HOME/admin
export TNS_ADMIN=$ORACLE_HOME/network/admin
export LD_LIBRARY_PATH=$ORACLE_HOME/lib:$ORACLE_HOME/jlib
export JAVA_HOME=$ORACLE_HOME/jdk
export ORA_NLS10=$ORACLE_HOME/nls/data
export PATH=$PATH:$ORACLE_HOME/bin:/usr/bin:/usr/sbin:/usr/local/sbin:/usr/lib:$JAVA_HOME/bin
export PATH

　　
　　2、修改 listener.ora

　　
　　# listener.ora Network Configuration File: /u01/app/oracle/product/11.2.0/db_1/network/admin/listener.ora
# Generated by Oracle configuration tools.
　　SID_LIST_LISTENER =
  (SID_LIST =
    (SID_DESC =
      (SID_NAME = orcl)
      (ORACLE_HOME = /u01/app/oracle/product/11.2.0/db_1)
      (GLOBAL_DBNAME = orcl)
    )
  )
　　LISTENER =
  (DESCRIPTION_LIST =
    (DESCRIPTION =
      (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))
      (ADDRESS = (PROTOCOL = TCP)(HOST = 10.8.205.140)(PORT = 1521))
    )
  )
 
 
ADR_BASE_LISTENER = /u01/app/oracle
　　
　　
　　3、修改 tnsnames.ora

　　# tnsnames.ora Network Configuration File: /u01/app/oracle/product/11.2.0/db_1/network/admin/tnsnames.ora
# Generated by Oracle configuration tools.
　　ORCL =
  (DESCRIPTION =
    (ADDRESS = (PROTOCOL = TCP)(HOST = 10.8.205.140)(PORT = 1521))
    (CONNECT_DATA =
      (SERVER = DEDICATED)
      (SERVICE_NAME = orcl)
    )
  )
　　  EXTPROC_CONNECTION_DATA =
  (DESCRIPTION =
    (ADDRESS_LIST =
      (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))
    )
    (CONNECT_DATA =
      (SID = PLSExtProc)
      (PRESENTATION = RO)
    )
  )
　　
　　4、重启监听、数据库连接 试试