I am running Ubuntu 16.04 and using SQL Server Express and Oracle Java 9:
$ java --version java 9.0.1 Java(TM) SE Runtime Environment (build 9.0.1+11) Java HotSpot(TM) 64-Bit Server VM (build 9.0.1+11, mixed mode) I have installed SQL Server jdbc driver (sqljdbc_6.2.2.0_enu.tar.gz in https://www.microsoft.com/en-us/download/details.aspx?id=55539)
/home/t/program_files/RDBMS/JDBC/mssqlserverjdbc_6.0/enu/jre8/sqljdbc42.jar I wrote some simple code to test using the driver :
// JDBC driver name and database URL String JDBC_DRIVER = "com.microsoft.sqlserver.jdbc.SQLServerDriver"; // static final String DB_URL = "jdbc:mysql://localhost/"; // connect to a DBMS String DB_URL = "jdbc:microsoft:sqlserver://localhost/STUDENTS"; // connect to a specific database in a DBMS // Database credentials String USER = "SA"; String PASS = "password"; //Register JDBC driver try{ Class.forName(JDBC_DRIVER); }catch(Exception e){ //Handle errors for Class.forName e.printStackTrace(); } //Open a connection System.out.println("Connecting to database..."); try(Connection conn = DriverManager.getConnection(DB_URL, USER, PASS); // connect to DBMS, not to a DB Statement st = conn.createStatement()){ }catch(SQLException se){ //Handle errors for JDBC se.printStackTrace(); } Compilation is fine:
$ javac BasicOperations.java Running isn't.
$ java -cp .:/home/t/program_files/RDBMS/JDBC/mssqlserverjdbc_6.0/enu/jre8/sqljdbc42.jar BasicOperations Connecting to database... com.microsoft.sqlserver.jdbc.SQLServerException: The TCP/IP connection to the host localhost/STUDENTS, port 1433 has failed. Error: "localhost/STUDENTS. Verify the connection pro\ perties. Make sure that an instance of SQL Server is running on the host and accepting TCP/IP connections at the port. Make sure that TCP connections to the port are not blocked \ by a firewall.". at com.microsoft.sqlserver.jdbc.SQLServerException.makeFromDriverError(SQLServerException.java:191) at com.microsoft.sqlserver.jdbc.SQLServerException.ConvertConnectExceptionToSQLServerException(SQLServerException.java:242) at com.microsoft.sqlserver.jdbc.SocketFinder.findSocket(IOBuffer.java:2369) at com.microsoft.sqlserver.jdbc.TDSChannel.open(IOBuffer.java:551) at com.microsoft.sqlserver.jdbc.SQLServerConnection.connectHelper(SQLServerConnection.java:1963) at com.microsoft.sqlserver.jdbc.SQLServerConnection.login(SQLServerConnection.java:1628) at com.microsoft.sqlserver.jdbc.SQLServerConnection.connectInternal(SQLServerConnection.java:1459) at com.microsoft.sqlserver.jdbc.SQLServerConnection.connect(SQLServerConnection.java:773) at com.microsoft.sqlserver.jdbc.SQLServerDriver.connect(SQLServerDriver.java:1168) at java.sql/java.sql.DriverManager.getConnection(DriverManager.java:678) at java.sql/java.sql.DriverManager.getConnection(DriverManager.java:229) at BasicOperations.main(BasicOperations.java:46) How shall I solve the problem? Is it correct that I should do equivalence to https://stackoverflow.com/a/12430561/1224441 on Ubuntu? Because I am using SQL Server Express on Ubuntu, I only know how to access it on terminal using sqlcmd.
Thanks.