See build 16 in the attached file:
If Result Seeking Strategy -> TestNG class name -> Attach TestNG XML is ON the following error appears:
br.eti.kinoshita.testlinkjavaapi.util.TestLinkAPIException: (uploadExecutionAttachment) - Error inserting attachment on DB
at br.eti.kinoshita.testlinkjavaapi.BaseService.checkResponseError(BaseService.java:113)
at br.eti.kinoshita.testlinkjavaapi.BaseService.executeXmlRpcCall(BaseService.java:91)
at br.eti.kinoshita.testlinkjavaapi.TestCaseService.uploadExecutionAttachment(TestCaseService.java:490)
at br.eti.kinoshita.testlinkjavaapi.TestLinkAPI.uploadExecutionAttachment(TestLinkAPI.java:876)
at hudson.plugins.testlink.TestLinkSite.uploadAttachment(TestLinkSite.java:227)
at hudson.plugins.testlink.result.AbstractTestNGResultSeeker.handleResult(AbstractTestNGResultSeeker.java:112)
at hudson.plugins.testlink.result.TestNGClassNameResultSeeker.seek(TestNGClassNameResultSeeker.java:128)
at hudson.plugins.testlink.TestLinkBuilder.perform(TestLinkBuilder.java:236)
at hudson.tasks.BuildStepMonitor$1.perform(BuildStepMonitor.java:20)
at hudson.model.AbstractBuild$AbstractBuildExecution.perform(AbstractBuild.java:756)
at hudson.model.Build$BuildExecution.build(Build.java:198)
at hudson.model.Build$BuildExecution.doRun(Build.java:159)
at hudson.model.AbstractBuild$AbstractBuildExecution.run(AbstractBuild.java:529)
at hudson.model.Run.execute(Run.java:1710)
at hudson.model.FreeStyleBuild.run(FreeStyleBuild.java:43)
at hudson.model.ResourceController.execute(ResourceController.java:88)