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QNameserviceName=newQName("http://www.marketo.com/mktows/","MktMktowsApiService");MktMktowsApiServiceservice=newMktMktowsApiService(marketoSoapEndPoint,serviceName);MktowsPortport=service.getMktowsApiSoapPort(); I wanted to know if service.getMktowsApiSoapPort(); is thread safe or not. In our application we will be calling multiple instances of marketo connection to send emails on every registration. if it is , then resources we need to release once we have acquired a connection and done with processing. Thanks, Neha