Getting the SQL Server Connection Exception

I am getting below connection exception, when trying to connect to SQL Server using JDBC.

Can someone please help, with this issue?

I am using sqljdbc4.jar file to connect to SQL Server

Code is as below

String dbURL = "jdbc:sqlserver://10.156.54.123;encrypt=false;DatabaseName=PRA;sslProtocol=TLSv1;";
 String user = "username";
 String pass = "password";
 conn = DriverManager.getConnection(dbURL, user, pass);

This is the exception.

Nov 14, 2020 8:33:01 PM com.microsoft.sqlserver.jdbc.TDSChannel enableSSL INFO: java.security path: /usr/java/jdk1.8.0_261-amd64/jre/lib/security Security providers: [SUN version 1.8, SunRsaSign version 1.8, SunEC version 1.8, SunJSSE version 1.8, SunJCE version 1.8, SunJGSS version 1.8, SunSASL version 1.8, XMLDSig version 1.8, SunPCSC version 1.8] SSLContext provider info: Sun JSSE provider(PKCS12, SunX509/PKIX key/trust factories, SSLv3/TLSv1/TLSv1.1/TLSv1.2/TLSv1.3) SSLContext provider services: [SunJSSE: KeyPairGenerator.RSA -> sun.security.rsa.RSAKeyPairGenerator$Legacy aliases: [1.2.840.113549.1.1, OID.1.2.840.113549.1.1] , SunJSSE: Signature.SHA1withRSA -> sun.security.rsa.RSASignature$SHA1withRSA aliases: [1.2.840.113549.1.1.5, 1.3.14.3.2.29, OID.1.2.840.113549.1.1.5] attributes: {SupportedKeyClasses=java.security.interfaces.RSAPublicKey|java.security.interfaces.RSAPrivateKey} , SunJSSE: SSLContext.TLS -> sun.security.ssl.SSLContextImpl$TLSContext aliases: [SSL] , SunJSSE: SSLContext.TLSv1 -> sun.security.ssl.SSLContextImpl$TLS10Context aliases: [SSLv3] , SunJSSE: Signature.MD2withRSA -> sun.security.rsa.RSASignature$MD2withRSA aliases: [1.2.840.113549.1.1.2, OID.1.2.840.113549.1.1.2] attributes: {SupportedKeyClasses=java.security.interfaces.RSAPublicKey|java.security.interfaces.RSAPrivateKey} , SunJSSE: KeyFactory.RSA -> sun.security.rsa.RSAKeyFactory$Legacy aliases: [1.2.840.113549.1.1, OID.1.2.840.113549.1.1] , SunJSSE: Signature.MD5withRSA -> sun.security.rsa.RSASignature$MD5withRSA aliases: [1.2.840.113549.1.1.4, OID.1.2.840.113549.1.1.4] attributes: {SupportedKeyClasses=java.security.interfaces.RSAPublicKey|java.security.interfaces.RSAPrivateKey} , SunJSSE: KeyStore.PKCS12 -> sun.security.pkcs12.PKCS12KeyStore , SunJSSE: TrustManagerFactory.SunX509 -> sun.security.ssl.TrustManagerFactoryImpl$SimpleFactory , SunJSSE: KeyManagerFactory.SunX509 -> sun.security.ssl.KeyManagerFactoryImpl$SunX509 , SunJSSE: TrustManagerFactory.PKIX -> sun.security.ssl.TrustManagerFactoryImpl$PKIXFactory aliases: [SunPKIX, X509, X.509] , SunJSSE: KeyManagerFactory.NewSunX509 -> sun.security.ssl.KeyManagerFactoryImpl$X509 aliases: [PKIX] , SunJSSE: SSLContext.Default -> sun.security.ssl.SSLContextImpl$DefaultSSLContext , SunJSSE: SSLContext.TLSv1.1 -> sun.security.ssl.SSLContextImpl$TLS11Context , SunJSSE: Signature.MD5andSHA1withRSA -> sun.security.ssl.RSASignature , SunJSSE: SSLContext.TLSv1.3 -> sun.security.ssl.SSLContextImpl$TLS13Context , SunJSSE: SSLContext.TLSv1.2 -> sun.security.ssl.SSLContextImpl$TLS12Context ] java.ext.dirs: /usr/java/jdk1.8.0_261-amd64/jre/lib/ext:/usr/java/packages/lib/ext com.microsoft.sqlserver.jdbc.SQLServerException: The driver could not establish a secure connection to SQL Server by using Secure Sockets Layer (SSL) encryption. Error: “Unexpected rethrowing”.

Answer

In case the above solution doesn’t work for anyone. Try replacing the sql-jdbc jar with mssql-jdbc-8.4.1 jar.

Posting this because the above approach didn’t work for me. The workaround for me on the exception – The driver could not establish a secure connection to SQL Server by using Secure Sockets Layer (SSL) encryption. Error: “Unexpected rethrowing” was to replace the jar.