Hi Lily,
I have the same error, when I view trace DIR found below error log:
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ClassLoader: com.sap.ndb.studio.jdbc.JDBCPlugin$2@f831ab
package com.sap.db.jdbc, SAP In-Memory Database JDBC Driver, SAP AG, 1.00.53.Build 0375657-1510 (Commit-Hash: not set) on Java 1.7.0_45
---- Thread 1aa46bd Thread-11 Timestamp: 2014-01-04 13:32:35.814
new Connection 'jdbc:sap://fullertonsap:30015;'
locale=en_US
user=SYSTEM
password=***
timeout=0
reconnect=true
validateCertificate=false
encrypt=false
HOSTLIST: [fullertonsap:30015,]
new RTEException: -813 Cannot connect to host fullertonsap:30015 [Connection refused: connect], -813.
whereAmIjava.lang.Throwable
at com.sap.db.util.Tracer.whereAmI(Tracer.java:348)
at com.sap.db.rte.comm.RTEException.<init>(RTEException.java:66)
at com.sap.db.rte.comm.SocketComm.openSocket(SocketComm.java:125)
at com.sap.db.rte.comm.SocketComm.<init>(SocketComm.java:58)
at com.sap.db.rte.comm.SocketComm$1.open(SocketComm.java:42)
at com.sap.db.jdbc.topology.Topology.getSession(Topology.java:145)
at com.sap.db.jdbc.Driver.openByURL(Driver.java:1016)
at com.sap.db.jdbc.Driver.connect(Driver.java:230)
at com.sap.ndb.studio.jdbc.JDBCPlugin$3.run(JDBCPlugin.java:590)
using null
=> FAILED
Any Advice.
Thanks,
Nick