Connection to DB from client server through jdbc:Oracle:Oci8 fail

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Connection to DB from client server through jdbc:Oracle:Oci8 fail

We tried to use to connect to DB using jdbc:Oracle:Oci8:@<SERVICE-A>. Connection fail / refuse with one DB .But its working with other databases.
But through toad, jdbc thin client were able to connect. But this has happen suddenly and were able to connect previously. How to navigate this issue to resolve.

alternative arrangement :
we currently connecting to DB Through JDBC Thin Client(

Issue found: connection through jdbc:Oracle:Oci8:@<SERVICE-A>


Caused by: java.sql.SQLException: Exception occurred while getting connection: oracle.ucp.UniversalConnectionPoolException: Cannot get Connection from Datasource: java.sql.SQLRecoverableException: IO Error: Connection reset
        at oracle.ucp.util.UCPErrorHandler.newSQLException(
        at oracle.ucp.util.UCPErrorHandler.throwSQLException(
        at oracle.ucp.jdbc.PoolDataSourceImpl.getConnection(
        at oracle.ucp.jdbc.PoolDataSourceImpl.getConnection(
        at oracle.ucp.jdbc.PoolDataSourceImpl.getConnection(
        at oracle.odi.jdbc.datasource.LoginTimeoutDatasourceAdapter.doGetConnection(
       at oracle.odi.jdbc.datasource.LoginTimeoutDatasourceAdapter.getConnection(
        at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(

at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(

---------- Post updated at 05:50 AM ---------- Previous update was at 05:43 AM ----------

How to trace specific connection come to DB using port, service name, username, oci8.

Please note now same user already connected through (jdbc:oracle:thin:@oda-nc-tst-scan:1521/<SERVICE-A>)

Last edited by Don Cragun; 11-24-2016 at 12:38 AM.. Reason: Made guesses at where CODE and ICODE tags should be added...
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