oracle安装时遇到的一些问题

(1)JDBC连接oracle11g时遇到：
connect error Info:Io 异常: The Network Adapter could not establish
the connection
然后就查看oracle11g的实例状态
su - oracle
sqlplus /nolog
conn /as sysdba
startup
(2)又出现这样的报错提示：
ORA-00845: MEMORY_TARGET not supported on this system
解决办法：http://yangtingkun.itpub.net/post/468/408235
（3）找不到ORCL SID
于是就在/opt/oracle/product/OraHome/network/admin/listener.ora添加

LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.7.61)(PORT = 1521))
)

)

SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(GLOBAL_DBNAME = orcl)
(ORACLE_HOME= /opt/oracle/product/OraHome)
(SID_NAME = orcl)
)
)

这里其实也遇到一个问题
一开始(ORACLE_HOME= /opt/oracle/oracle/product/OraHome)写错了！！
于是就会报这样的错误TNS01201

（5）

oracle连接异常shared memory realm does not exist

/article/4360574.html

(6)ORCLE连接字符串用户名为sys as sysdba