What is the role of class.forname while loading drivers?
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What does the jdbc connection interface?
java.lang.ClassNotFoundException:oracle.jdbc.driver.OracleDr iver? I get this error at run time.I used oracle10G. I set CLASS PATH:C:\oraclexe\app\oracle\product\10.2.0 \server\jdbc\lib\ojdbc14.jar; I write JDBC PROGRAM like import java.sql.*; class Example { public static void main(String args[]) { try { Class.forName ("oracle.jdbc.driver.OracleDriver"); System.out.println("Driver Loaded"); Connection con=DriverManager.getConnection ("jdbc:oracle:thin:@localhost:1521:xe","system","salmas"); System.out.println("Driver Connected"); Statement st=con.createStatement(); ResultSet rs=st.executeQuery("select * from emp"); while(rs.next()) { System.out.println(rs.getInt(1)); System.out.println(rs.getString(2)); System.out.println(rs.getString(3)); } st.close(); con.close(); } catch(Exception e) { System.out.println(e); } finally { System.out.println("it's finally block executed"); } } }
which scenarios we go for jdbc,and which scenario we go for connection polling and wat r advantages and disadvantages using connection pooling.
What is execute(), executeUpdate() and executeQuery() methods?
If you are truncated using JDBC, how can you that how much data is truncated?
What is a JDBC 2.0 DataSource?
Where is ojdbc14 jar located?
What does adapter class provide?
How can you make the connection using jdbc?
What is JDBC and ODBC and what are the differences between them?
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How we can you use preparedstatement.
What do you mean by two phase commits?