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Cannot create PoolableConnectionFactory (validationQuery didn’t return a row)

Issue: java.lang.RuntimeException: org.apache.commons.dbcp.SQLNestedException: Cannot create PoolableConnectionFactory (validationQuery didn’t return a row)     at com.infuze.service.linkedin.workflow.RegisterUserWorkflow.executeProcess(RegisterUserWorkflow.java:84)     at com.infuze.service.workflow.WorkflowExecutor.execute(WorkflowExecutor.java:24)     at com.infuze.service.linkedin.xml.LinkedInJobAlertXmlService.register(LinkedInJobAlertXmlService.java:48)     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)     at java.lang.reflect.Method.invoke(Method.java:597)     at com.livrona.xhttpi.XHttpInvoker.execute(Unknown Source)     at com.infuze.server.service.XmlServiceActionHandler.execute(XmlServiceActionHandler.java:28)     at com.livrona.haxe.server.RequestHandler.executeRequest(RequestHandler.java:149)     at com.livrona.haxe.server.RequestHandler.run(RequestHandler.java:77)Caused by: org.apache.commons.dbcp.SQLNestedException: Cannot create PoolableConnectionFactory (validationQuery didn’t return a row)     at org.apache.commons.dbcp.BasicDataSource.createPoolableConnectionFactory (BasicDataSource.java:1549)     at org.apache.commons.dbcp.BasicDataSource.createDataSource …

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What the common type of error while Parsing JSON?

The following are the common types of errors we see while parsing JSON data. Error Domain=org.brautaset.JSON.ErrorDomain Code=3 UserInfo=0x12602a0 “Expected value while parsing array”,Error Domain=org.brautaset.JSON.ErrorDomain Code=3 UserInfo=0×1260320 “Object value expected for key: results”, Error Domain=org.brautaset.JSON.ErrorDomain Code=5 UserInfo=0x125fe30 “Unescaped control character ’0×0′”,Error Domain=org.brautaset.JSON.ErrorDomain Code=3 UserInfo=0×1260200 “Object key string expected”,  Error trace is: …

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How to find footprint of a Certificate?

A certificate’s fingerprint is not part of the certificate, but it can be computed from it. Browsers tend to display it as if it were part of the certificate. A fingerprint is the MD5 digest of the der-encoded CertificateInfo, which is an ASN.1 type specified as part of the X.509 …

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