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ORA-12541: TNS:no listener (DBD ERROR: OCIServerAttach)

This is the below error in Oracle 10g Enterprise manager
ORA-12541: TNS:no listener (DBD ERROR: OCIServerAttach).

I had started listner, and enterprise manager using emctl start dbconsole, everything went fine, but i am getting the above error in the Enterprise manager page.

Kindly advise me to rectify the above error

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umesh4exp
Asked:
umesh4exp
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1 Solution
 
woolmilkporcCommented:
Hi,
this is most probably a mismatch between $ORACLE_HOME/network/admin/tnsnames.ora and $ORACLE_HOME/network/admin/listener.ora
Check it!
wmp
0
 
woolmilkporcCommented:
Also check the ConnectDescriptor in ${ORACLE_HOME}/${HOSTNAME}_${ORACLE_SID}/sysman/config/emoms.properties if it matches the entries in the other two files.
Or is/was there simply a typo in hostname/port/SID/service when configuring/accessing the instance in enterprise manager?
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