SAP Knowledge Base Article - Preview

2862414 - Failed to open a socket/Too many open files : SCC error

Symptom

Application deployed on the SAP Cloud Platform (SCP) fails to load and the below error is populated in the SAP Cloud Connector trace (ljs_trace.log):


   #Unable to open connection to backend system: Unable to create Channel from class class io.netty.channel.socket.nio.NioSocketChannel   
   io.netty.channel.ChannelException: Unable to create Channel from class class io.netty.channel.socket.nio.NioSocketChannel
   Caused by: java.lang.reflect.InvocationTargetException
   Caused by: io.netty.channel.ChannelException: Failed to open a socket.
   Caused by: java.net.SocketException: Too many open files


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Environment

SAP Cloud Connector release Independent

Product

SAP BTP, Neo environment 1.0 ; SAP Cloud Identity Services all versions ; SAP Connectivity service 2.0 ; SAP HANA 1.0, platform edition

Keywords

SAP cloud connector, SAP CC, CC, Connector, Linux, Windows, Operating system, open file, opening, socket, many open files, HTTPS, connection, ABAP, com.sap.scc.rt, SccEndpointValidator, class io.netty.channel.socket.nio.NioSocketChannel, io.netty.channel, java.net.SocketException , KBA , BC-MID-SCC , SAP Cloud Connector On-Demand/On-Premise Connectivity , BC-OP-LNX , Linux , BC-NEO-CON , Neo to On-premise Connectivity service , Problem

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