A user connect to the database is very slow.

Hi, all!
I met a problem in the database. A user(schema) connect to the database is very slow. and the user query the data is slow too.

And some errors in the listener.log :
23-Aus -2012 06:03:54 * (CONNECT_DATA=(CID=(PROGRAM=)(HOST=__jdbc__)(USER=))(SERVICE_NAME=ora36)(CID=(PROGRAM=)(HOST=__jdbc__)(USER=))) * (ADDRESS=(PROTOCOL=tcp)(HOST=xxx.xxx.xxx.xxx)(PORT=24923)) * establish * ora36 * 12514
TNS-12514: TNS:listener does not currently know of service requested in connect descriptor
23-Aus -2012 06:03:54 * (CONNECT_DATA=(CID=(PROGRAM=)(HOST=__jdbc__)(USER=))(SERVICE_NAME=ora36)(CID=(PROGRAM=)(HOST=__jdbc__)(USER=))) * (ADDRESS=(PROTOCOL=tcp)(HOST=xxx.xxx.xxx.xxx)(PORT=23409)) * establish * ora36 * 12514
TNS-12514: TNS:listener does not currently know of service requested in connect descriptor
23-Aus -2012 06:03:55 * (CONNECT_DATA=(CID=(PROGRAM=)(HOST=__jdbc__)(USER=))(SERVICE_NAME=ora36)(CID=(PROGRAM=)(HOST=__jdbc__)(USER=))) * (ADDRESS=(PROTOCOL=tcp)(HOST=xxx.xxx.xxx.xxx)(PORT=9103)) * establish * ora36 * 12514
TNS-12514: TNS:listener does not currently know of service requested in connect descriptor
How can I resolve this, thanks!

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         at com.evermind.server.http.EvermindFilterChain.doFilter(EvermindFilterChain.java:20)
         at oracle.sysman.eml.app.ContextInitFilter.doFilter(ContextInitFilter.java:239)
         at com.evermind.server.http.ServletRequestDispatcher.invoke(ServletRequestDispatcher.java:600)
         at com.evermind.server.http.ServletRequestDispatcher.forwardInternal(ServletRequestDispatcher.java:317)
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    Edited by: user515960 on 2010-06-25 02:41

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    2009-07-13 14:55:51,062 [HttpRequestHandler-12767107] ERROR eml.OMSHandshake getParameterFromDB.402 - ORA-01017: invalid username/password; logon denied
    2009-07-13 14:55:51,063 [HttpRequestHandler-12767107] ERROR eml.OMSHandshake processFailure.619 - OMSHandshake failed.(AGENT URL = http://VTL3200DB:3938/emd/main)(ERROR = INTERNAL_ERROR)
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    2009-07-13 14:55:51,127 [HttpRequestHandler-28346522] ERROR eml.OMSHandshake getParameterFromDB.402 - ORA-01017: invalid username/password; logon denied
    2009-07-13 14:55:51,127 [HttpRequestHandler-28346522] ERROR eml.OMSHandshake processFailure.619 - OMSHandshake failed.(AGENT URL = http://VTL3200DB:3938/emd/main)(ERROR = INTERNAL_ERROR)
    2009-07-13 14:56:21,162 [HttpRequestHandler-32110028] ERROR conn.ConnectionService verifyRepositoryEx.433 - Invalid Connection Pool. ERROR = ORA-01017: invalid username/password; logon denied
    2009-07-13 14:56:21,193 [HttpRequestHandler-32110028] ERROR eml.OMSHandshake getParameterFromDB.402 - ORA-01017: invalid username/password; logon denied
    2009-07-13 14:56:21,194 [HttpRequestHandler-32110028] ERROR eml.OMSHandshake processFailure.619 - OMSHandshake failed.(AGENT URL = http://VTL3200DB:3938/emd/main)(ERROR = INTERNAL_ERROR)
    2009-07-13 14:56:21,227 [HttpRequestHandler-12767107] ERROR conn.ConnectionService verifyRepositoryEx.433 - Invalid Connection Pool. ERROR = ORA-01017: invalid username/password; logon denied
    2009-07-13 14:56:21,258 [HttpRequestHandler-12767107] ERROR eml.OMSHandshake getParameterFromDB.402 - ORA-01017: invalid username/password; logon denied
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    Invalid Connection Pool. ERROR = ORA-01017: invalid username/password; logon denied
    Don't say password is correct, if password is correct then tell us what last changes you did. did you change SYSMAN password throught alter user ...identified ... ?
    Regards,
    Taj

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