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zzhang2006Flag for United States of America

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Oracle 10g server installed on XP, sometimes down and sometime up ..

I installed the 10g v2 server on a laptop, just to learn the concepts related to Oracle systems.
I know it's too big a task to run for tha labtop, however it seem "working". I mean from the interprice manager I saw everthing is up and was able to use iSQLPlus as well as SQL*PLUS in both remote and local clients.

But it seems not stable or some configuration to be done or there should be a sequence of booting the service/listener processes. The sympton is: half of the time sthe system shows up in the EM as "Database instance is down" and "the Agent cannot connect to the instance, because it "currently" does not know the SID "  Here is the exact copy from EM
 
 Agent Connection to Instance
 
 
 
 
Status  Failed
 
Details  ORA-12505: TNS:listener does not currently know of SID given in connect descriptor (DBD ERROR: OCIServerAttach)
 
 However the listern on port 1521 is up:
 Listener
 
 
Status  Up
 
Host  SCIMAT11
 
Port  1521
 
Name  LISTENER
 
Oracle Home  C:\oracle\product\10.2.0\db_1
 
Location  C:\oracle\product\10.2.0\db_1\network\admin

I don't really have an clear idea of which service is responsible for which listerners and agents, but I do see there are serveral Oracle named services started automatically in Windows XP.  Is the Agent, the TNS Listener,actually listening on the port 1521? I would really appreciated some expert give me a quick drawing about the server/listerner/Agent architecture of Oracle and the sequence/logic they should boot up and their dependences, even if you can provide a quick answer to my problem.

Thanks in advance.

Ze
 
 
 
 

 
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LindaC
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Thanks Linda!
I got it working!