RfcException: [null]

    message: Connect to SAP gateway failed

Connection parameters: TYPE=A DEST=172.20.181.8800100liuwangpool ASHOST=172.20.181.88 SYSNR=00 PCS=1

LOCATION    CPIC (TCP/IP) on local host with Unicode

ERROR       partner '172.20.181.88:3300' not reached

TIME        Thu Jun 03 10:05:56 2021

RELEASE     720

COMPONENT   NI (network interface)

VERSION     40

RC          -10

MODULE      nixxi.cpp

LINE        3255

DETAIL      NiPConnect2: 172.20.181.88:3300

SYSTEM CALL connect

ERRNO       10060

ERRNO TEXT  WSAETIMEDOUT: Connection timed out

COUNTER     2

    Return code: RFC_FAILURE(1)

    error group: 102

    key: RFC_ERROR_COMMUNICATION

com.sap.conn.rfc.engine.RfcIoControl.error_end(RfcIoControl.java.255)

com.sap.conn.rfc.engine.RfcIoControl.ab_rfcopen(RfcIoControl.java.94)

com.sap.conn.rfc.api.RfcApi.RfcOpen(RfcApi.java.86)

com.sap.conn.jco.rt.MiddlewareJavaRfc$JavaRfcClient.connect(MiddlewareJavaRfc.java.1306)

com.sap.conn.jco.rt.ClientConnection.connect(ClientConnection.java.712)

com.sap.conn.jco.rt.RepositoryConnection.connect(RepositoryConnection.java.46)

com.sap.conn.jco.rt.PoolingFactory.init(PoolingFactory.java.103)

com.sap.conn.jco.rt.ConnectionManager.createFactory(ConnectionManager.java.189)

com.sap.conn.jco.rt.DefaultConnectionManager.createFactory(DefaultConnectionManager.java.45)

com.sap.conn.jco.rt.ConnectionManager.getFactory(ConnectionManager.java.178)

com.sap.conn.jco.rt.RfcDestination.getSystemID(RfcDestination.java.787)

com.sap.conn.jco.rt.RepositoryManager.getRepository(RepositoryManager.java.30)

com.sap.conn.jco.rt.RfcDestination.getRepository(RfcDestination.java.858)

sun.reflect.NativeMethodAccessorImpl.invoke0(NativeMethodAccessorImpl.java.-2)

sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java.62)

sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java.43)

java.lang.reflect.Method.invoke(Method.java.498)

com.fr.data.impl.sap.SAPDatabaseConnection.testConnection(null.-1)

com.fr.data.operator.DataOperator$8.call(null.-1)

com.fr.data.operator.DataOperator$8.call(null.-1)

java.util.concurrent.FutureTask.run(FutureTask.java.266)

java.util.concurrent.Executors$RunnableAdapter.call(Executors.java.511)

java.util.concurrent.FutureTask.run(FutureTask.java.266)

java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java.1149)

java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java.624)

java.lang.Thread.run(Thread.java.748)