ERROR:
ORA-01034: ORACLE not available
ORA-27101: shared memory realm does not exist
Linux-x86_64 Error: 2: No such file or directory
Process ID: 0
Session ID: 0 Serial number: 0

问题比较诡异，原来的配置在另外一台服务器上是没有问题的。而换了一台服务器就出问题。下面看修改的内容吧。

监听配置ORACLE_HOME错误。修改监听配置. 原配置:

(ORACLE_HOME = /u01/app/oracle/product/11.2.0)

修改后配置:

(ORACLE_HOME = /u01/app/oracle/product/11.2.0/)

修改后完整配置:

LISTENER =
  (DESCRIPTION_LIST =
    (DESCRIPTION =
      (ADDRESS_LIST =
        (ADDRESS = (PROTOCOL = TCP)(HOST = xxxxxx)(PORT = 1521))
      )
    )
  )

SID_LIST_LISTENER =
  (SID_LIST =
    (SID_DESC =
      (ORACLE_HOME = /u01/app/oracle/product/11.2.0/)
      (SID_NAME = testdb1)
    )
  )