SQL Developer error

Question

I'm trying to use SQL developer, but it won't connect using the proxy I specify in the preferences. I guess it's because of some kind of certificate error? Not sure. I'm getting the error:

No HTTP response received.

javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target at com.sun.net.ssl.internal.ssl.Alerts.getSSLException(Alerts.java:174) at com.sun.net.ssl.internal.ssl.SSLSocketImpl.fatal(SSLSocketImpl.java:1591) at com.sun.net.ssl.internal.ssl.Handshaker.fatalSE(Handshaker.java:187) at com.sun.net.ssl.internal.ssl.Handshaker.fatalSE(Handshaker.java:181) at com.sun.net.ssl.internal.ssl.ClientHandshaker.serverCertificate(ClientHandshaker.java:975) at com.sun.net.ssl.internal.ssl.ClientHandshaker.processMessage(ClientHandshaker.java:123) at com.sun.net.ssl.internal.ssl.Handshaker.processLoop(Handshaker.java:516) at com.sun.net.ssl.internal.ssl.Handshaker.process_record(Handshaker.java:454) at com.sun.net.ssl.internal.ssl.SSLSocketImpl.readRecord(SSLSocketImpl.java:884) at com.sun.net.ssl.internal.ssl.SSLSocketImpl.performInitialHandshake(SSLSocketImpl.java:1096) at com.sun.net.ssl.internal.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1123) at com.sun.net.ssl.internal.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1107) at sun.net.www.protocol.https.HttpsClient.afterConnect(HttpsClient.java:405) at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(AbstractDelegateHttpsURLConnection.java:166) at sun.net.www.protocol.https.HttpsURLConnectionImpl.connect(HttpsURLConnectionImpl.java:133) at oracle.ide.webbrowser.HttpPing$PingRunnable.run(HttpPing.java:109) at oracle.ide.webbrowser.ProxyOptions.doTask(ProxyOptions.java:522) at oracle.ide.webbrowser.HttpPing.ping(HttpPing.java:74) at oracle.ide.webbrowser.ProxySettingsPanel$5.run(ProxySettingsPanel.java:766) at java.lang.Thread.run(Thread.java:619) Caused by: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target at sun.security.validator.PKIXValidator.doBuild(PKIXValidator.java:285) at sun.security.validator.PKIXValidator.engineValidate(PKIXValidator.java:191) at sun.security.validator.Validator.validate(Validator.java:218) at com.sun.net.ssl.internal.ssl.X509TrustManagerImpl.validate(X509TrustManagerImpl.java:126) at com.sun.net.ssl.internal.ssl.X509TrustManagerImpl.checkServerTrusted(X509TrustManagerImpl.java:209) at com.sun.net.ssl.internal.ssl.X509TrustManagerImpl.checkServerTrusted(X509TrustManagerImpl.java:249) at com.sun.net.ssl.internal.ssl.ClientHandshaker.serverCertificate(ClientHandshaker.java:954) ... 15 more Caused by: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target at sun.security.provider.certpath.SunCertPathBuilder.engineBuild(SunCertPathBuilder.java:174) at java.security.cert.CertPathBuilder.build(CertPathBuilder.java:238) at sun.security.validator.PKIXValidator.doBuild(PKIXValidator.java:280) ... 21 more

Answer 1

One of the first rules of debugging errors: Google the error message you're getting, in quotes, like this: "unable to find valid certification path to". When I did this, I found lots of useful information that is probably relevant to you.

Answer 2

This most likely means that the web server you are connecting to by SSL uses a certificate issued by an unknown authority. You want to add the certificate to your keystore (on the client).

See this article for instructions.

Answer 3

I think you don't install jdk yet. I recommand you if you use sql developer 1.5.1, you should use jdk 1.5.