Linux下Oracle远程连接
Linux上安装了Oracle 10g  
先问一个问题，
每次开机后直接 sqlplus 出现：
ERROR:
ORA-01034: ORACLE not available
ORA-27101: shared memory realm does not exist
Linux Error: 2: No such file or directory

然后我输入sqlplus sys/system as sysdba 然后可以直接进去，提示“只是一个暂时的实例”

 这是什么机制？
2. 然后在键入startup 然后本机登录就可以了，
3.现在我需要在远程机器上进行登录，大概的配置了一下，如下 不知对不对，反正不能登录， 请各位指导指导~ 先谢谢了~
listener.ora

LISTENER2 =
  (DESCRIPTION_LIST =
  (DESCRIPTION =
  (ADDRESS = (PROTOCOL = TCP)(HOST = TSH1)(PORT = 1521))
  )
  )

SID_LIST_LISTENER =
  (SID_LIST =
  (SID_DESC =
  (SID_NAME = PLSExtProc)
  (ORACLE_HOME = /usr/app/oracle/product/10.2.0/db_1)
  (PROGRAM = extproc)
  )
  )

LISTENER =
  (DESCRIPTION_LIST =
  (DESCRIPTION =
  (ADDRESS = (PROTOCOL = TCP)(HOST = 10.0.1.105)(PORT = 1521))
  )
  )

tnsnames.ora

# tnsnames.ora Network Configuration File: /usr/app/oracle/product/10.2.0/db_1/network/admin/tnsnames.ora
# Generated by Oracle configuration tools.

TSH1 =
  (DESCRIPTION =
  (ADDRESS_LIST =
  (ADDRESS = (PROTOCOL = TCP)(HOST = TSH1)(PORT = 1521))
  )
  (CONNECT_DATA =
  (SERVICE_NAME = tsh1)
  )
  )


------解决方案--------------------
　　进入ORACLE_BASE/ORACLE_HOME/NETWORK/ADMIN下面找sqlnet.ora文件
　　把
sqlnet.authentication_services=(NTS) 
改成
　　sqlnet.authentication_services=(NONE)

　　然后手动重起一下你的哪个数据库服务..在开始->控制面板->管理工具->服务里然后把这个服务的启动帐号改成你的帐号