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3391244 - Unable to open connection to backend system: error 110 - Connection timed out: /<ip address>

Symptom

Application is unable to fetch data from the backend system through SAP Cloud Connector. The following error messages are seen in the Ljs_trace.log file of SAP Cloud Connector.

<>#ERROR#com.sap.core.connectivity.spi.processing.AbstractProtocolProcessor#tunnel-client-19-4##Unable to open connection to backend system: error 110 - Connection timed out: /<ip address>
io.netty.channel.AbstractChannel$AnnotatedConnectException: error 110 - Connection timed out: /<ip address>
Caused by: java.net.ConnectException: error 110 - Connection timed out
    at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
    at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:731)
    at io.netty.channel.socket.nio.NioSocketChannel.doFinishConnect(NioSocketChannel.java:337)
    at io.netty.channel.nio.AbstractNioChannel$AbstractNioUnsafe.finishConnect(AbstractNioChannel.java:334)
    at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:776)
    at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:724)
    at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:650)
    at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:562)
    at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:997)
    at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)
    at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
    at java.lang.Thread.run(Thread.java:838)


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Environment

SAP Cloud Connector

Product

CONNECTOR FRAMEWORK all versions

Keywords

 error 110, Connection timed out, backend, Cloud Connector, SCC, Network issue, error , KBA , BC-MID-SCC , SAP Cloud Connector On-Demand/On-Premise Connectivity , Problem

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