1600 PMP mock questions 1400 CAPM mock questions 800 SCJP 6 mock questions 600 OCAJP 7 mock questions 590 OCPJP 7 mock questions 556 SCWCD 5 mock questions 500 OCEJWCD 6 mock questions pdfDownload (java,struts, hibernet etc)

JDBC interview questions

  • Image upload from JSP to DataBase ? view answer
  • How to Upload Image into Data Base ? view answer
  • Q. What is Rowset ? CachedRowSet,JDBCRowSet and WebRowSet ? view answer
  • Q. What is Batch Updates Using Statements in JDBC ? view answer
  • Q.Handling Blob and CLOB data using JDBC ? Insert CLOB and Retrive CLOB , Convert into String ? view answer
  • Q. Calling Stored procedures with Callable Statement ? view answer
  • Q.What is JDBC ? Explain Types Of Drivers with Advantage and Disadvantage ? view answer
  • Q. How java retrive the result returns from stored procedure ? view answer
  • Q.How to retrive the results in java returned by refcursor in Stored procedure ? view answer
  • Q.Reading an Oracle ARRAY from a stored procedure as an out ? view answer
  • What is Metadata and why should I use it? view answer
  • How Class.forName() load the Driver and DriverManager.getConnection() return connection? view answer
  • What will Class.forName do while loading drivers? view answer
  • How to Determining If a Result Set Is Scrollable? view answer
  • How Getting the Number of Rows in a Table Using a Scrollable Result Set? view answer
  • What is Scrollable Result Set ? view answer
  • What does setAutoCommit do? view answer
  • What is the difference between TYPE_SCROLL_INSENSITIVE , and TYPE_SCROLL_SENSITIVE? view answer
  • How to Make Updates to Updatable Result Sets? view answer
  • How can you move the cursor in scrollable result sets? view answer
  • What are the different types of Statements with Example? view answer
  • How can you retrieve data from the ResultSet? view answer
  • How can you create JDBC statements and what are they? view answer
  • How can you make the connection? view answer
  • What will Class.forName do while loading drivers? view answer
  • How can you load the drivers? view answer
  • What is PreparedStatement ? view answer
  • what is rowset? and how does it differ from resultset ? view answer
  • How to find total column from a resultset? view answer
  • What is the fastest type of JDBC driver? view answer
  • What are the different JDB drivers available? view answer
  • Q.What are collection pools? What are the advantages? view answer
  • Q.What are different types of Transaction Isolation Levels? view answer
  • Q. What is Dirty read? view answer
  • Q.Difference between Statement , PreparedStatement and CallableStatement ? view answer
  • Q.What is the advantage of using PreparedStatement? view answer
  • Q.What is Single-Phase Commit ? view answer
  • Q.What is two-phase commit? view answer
  • Q. How JDBC work with REF CURSOR returned by stored procedure and retrive results? view answer
  • Q. How do i get result return from stored procedure in JDBC? view answer
  • Q.How do you call a Stored Procedure from JDBC? view answer
  • Q.How do you handle your own transaction ? view answer
  • Q.What are the steps in the JDBC connection? view answer

!!! JDBC interview questions !!!

What does setAutoCommit do?



When a connection is created, it is in auto-commit mode. This means that each individual SQL statement is treated as a transaction and will be automatically committed right after it is executed. The way to allow two or more statements to be grouped into a transaction is to disable auto-commit mode:

con.setAutoCommit(false);

Once auto-commit mode is disabled, no SQL statements will be committed until you call the method commit explicitly.

con.setAutoCommit(false);
PreparedStatement updateSales =
    con.prepareStatement( "UPDATE COFFEES SET SALES = ? WHERE COF_NAME LIKE ?");
updateSales.setInt(1, 50); updateSales.setString(2, "Colombian");
updateSales.executeUpdate();
PreparedStatement updateTotal =
    con.prepareStatement("UPDATE COFFEES SET TOTAL = TOTAL + ? WHERE COF_NAME LIKE ?");
updateTotal.setInt(1, 50);
updateTotal.setString(2, "Colombian");
updateTotal.executeUpdate();
con.commit();
con.setAutoCommit(true);

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