Enterprise manager cannot connect to the database instance

problem ：Enterprise Manager Unable to connect to database instance . The status of the component is listed below

Environmental Science ：WinSer2003,oracle11G,IDC Computer room

describe ： It was normally accessible before , It won't work after I disable a network card .

remarks ： about Oracle For the operating environment , It's best not to touch the network card status , For example, if you are connected during installation, you will not be able to access it without an Internet cable , Similarly, there is no network cable during installation, and the network cable after installation cannot be used , I heard this from others , Because of such problems , So insist on installing Oracle The network card status cannot be tampered with on the machine .

 

The network card information of this server is like this ：

 

At that time, my hands were cheap , Forget the rule that you can't tamper with the state of the network card , Disable the first local connection , Because I thought , It's not available anyway .

Then I found out by chance Database Control I can't use it , Open prompt Enterprise Manager Unable to connect to database instance , Some people on the Internet say that it needs to be rebuilt OEM Such claim , But for the actual production environment , I'd rather not use it for the time being Database Control Also unwilling to use solutions that are uncertain about whether they can be solved .

But today I don't know how , Remember this question , So I enabled the first local connection , Although the cable is still unplugged , And then restart OracleDBConsoleorcl, You can visit .

 

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