The pureScale client affinity feature allows client specification of a single primary server and failover sequence to alternate servers and all rerouting is controlled by the client driver. That means all you have to do is basically configuring the right DB2 JCC JDBC properties in your WAS(Web Application Server) side. However the reality is many people has difficulty about how to have right setting about pureScale client affinity during configuration and failover test. For having right configuration for them, some people take over 2 weeks or 4... [More]

Tags:  purescale db2 jdbc clientaffinity db2_techtip 50_db2_nuggets jcc tomcat

In case of collecting DB2 JCC trace on client side,  we can find the detail from the following link for standalone java and IBM WebSphere. Collecting Data: Tracing with the IBM Data Server Driver for JDBC and SQLJ Then, how can we do the same thing on other WAS products. All WAS(Web application server) products are basically java processes. Therefore no matter what product you are using, enabling DB2 JCC trace is not other than the following 3 steps from Java perspective. 1.... [More]

Tags:  jcc jdbc

As of now, many of our customers are using IBM DB2 JDBC Driver(db2jcc.jar/db2jcc4.jar) to connect to DB2 server and configured SSL & normal database connectivity with end products such as WAS, OPM, Cloud and DataStudio etc. There are also a lot of you who are continuing to use SSL connection of JDBC for accessing your database server. Some of the tips in this blog will help to simplify the SSL connectivity with DB2 server. SSL Simplification: Many of you who prefer to configure the CA certificate instead of self signed certificate. If DB2... [More]

Tags:  db2 75_db2demystify driver jcc ssl jdbc

Is enableSysplexWLB (Sysplex Workload balancing JDBC driver property) a data source property or a driver wide (global) property?   Answer) enableSysplexWLB is not a driver-wide or a global property, so you cannot set it in the JCC properties file. These are properties starting with "db2.jcc.*" and "db2.jcc.override.*". The "db2.jcc." properties provide a driver wide default value.  It is a Data source or connection level property, so it can only be enabled programmatically inside the application via a... [More]

Tags:  db2 75_db2demystify jdbc driver enablesysplexwlb

In this demo, I have considered the following to demonstrate  DB2 connectivity using type 2 Universal JDBC type 2 driver with 32-bit and 64 application:   - Downloaded IBM 32-bit JDK for Windows from the web:  http://www.ibm.com/developerworks/java/jdk/ - Installed DB2 V9.7 FP5 64-bit Client on Windows 7 - DB2 V10.1 FP4 database server on Linux.   Used the following sample code: import java.sql.Connection;  import java.sql.DriverManager;  import java.sql.*;  import java.sql.SQLException;    public... [More]

Tags:  type2 jdbc db2;db2_advice

The current JDBC driver shipped with DB2 called the IBM CLIENT DRIVER FOR JDBC AND SQLJ can function as both a JDBC Type 4 and JDBC type 2 driver. Type 4 Mode When functioning as a JDBC type 4 driver, the driver is independent of the DB2 Client and only the driver jar db2jcc.jar or db2jcc4.jar need be installed.  In this mode all TCP/IP command execution and routing is done through Java.  In type 4 mode the driver requires the TCP/IP name and port of the server and uses the name of the database alias at the server.  If a Z/OS DB2... [More]

Tags:  50_db2_nuggets type2 type4 jdbc

From DB2 V9.7 Batched INSERT statements can return automatically generated keys. If batch execution of a PreparedStatement object returns automatically generated keys, you can call the DB2PreparedStatement.getDBGeneratedKeys method to retrieve an array of ResultSet objects that contains the automatically generated keys. Recently I had a customer trying to use getDBGeneratedKeys method with Batch inserts in a JDBC application using JCC driver and was looking for an example. Here is an example of how to use the getDBGeneratedKeys method in a... [More]

Tags:  db2 jdbc 50_db2_nuggets db2_techtip

When you download IBM Data server driver for JDBC and SQLJ, the tar or zip file (For Example, DB2 V10.1 FP3 driver download is v10.5fp3_jdbc_sqlj.tar.gz file)  contains following files: db2jcc4.jar   db2jcc.jar   sqlj4.zip sqlj.zip Wondering which file to use in your application? Let me explain what those files are and you can decide on which file to use for your application. db2jcc4.jar and db2jcc.jar, both of them are DB2 JDBC driver jar files and are Type 4 JDBC drivers. db2jcc.jar includes functions in the JDBC 3.0 and... [More]

Tags:  jdbc db2 db2_techtip db2jcc 50_db2_nuggets im_techtip driver

Hi All! I had opportunity to implement AES encryption from a Java program using a DB2 JDBC driver with ORACLE Java. Here are all the steps I took: 1> On client machine, installed ORACLE Java 7: http://www.oracle.com/technetwork/java/javase/archive-139210.html C:\Program Files\Java\jdk1.7.0_45\jre\bin>java -version java version "1.7.0_45" Java(TM) SE Runtime Environment (build 1.7.0_45-b18) Java HotSpot(TM) Client VM (build 24.45-b08, mixed mode, sharing) 2> On server, I changed the configuration as below to support AES... [More]

Tags:  encryption db2_techtip oracle 50_db2_nuggets db2 jdbc

Looking for a way to test Automatic Client Re-route using a simple JDBC program that uses IBM data server driver for JDBC & SQLJ (JCC) & JDBC DriverManager Connection? Here are the steps to follow: Step 1 :  UPDATE ALTERNATE SERVER INFORMATION in BOTH PRIMARY & STANDBY SERVERS: Lets assume that following are the Primary and Standby Server's hostnames and Port numbers. Primary: test1.ibm.com:50000 Secondary: test2.ibm.com:50000 Database: SAMPLE on both systems. a) On DB2 Primary system: db2 "update alternate server for... [More]

Tags:  50_db2_nuggets db2_techtip jcc client db2 jdbc reroute

As we wind down 2013, we thought it would be fun to see our most popular posts of the year: New to IBM InfoSphere DataStage Server ? First step... Download product! Help shape future enhancements to IBM Support Portal, Fix Central, My notifications, Service Request, and more IBM Netezza product names and models numbers IBM Universal JDBC Driver behavior when calling ResultSetMetaData.getColumnName and getColumnLabel against a DB2 LUW server discuss on developerWorks!   Here is a list of the most popular posts since launching this blog... [More]

Tags:  netezza jdbc db2 informix datastage

For the IBM® Data Server Driver for JDBC and SQLJ version 4.0 and later, the default behavior of ResultSetMetaData.getColumnName and ResultSetMetaData.getColumnLabel differs from the default behavior for earlier JDBC drivers. You can use the useJDBC4ColumnNameAndLabelSemantics property to change this behavior. The following examples show the values that are returned for IBM Data Server Driver for JDBC and SQLJ Version 4.0, and for previous JDBC drivers, when the useJDBC4ColumnNameAndLabelSemantics property is not set. The SELECT query contains... [More]

Tags:  jdbc db2

DB2 LUW provides the db2pd tool with two fmp options that when used in conjunction with each other can provide information which will identify the routine that was running in a particular db2fmp. The following technote documents a method to determine which db2fmp a routine ran in using the db2pd tool. http://www-01.ibm.com/support/docview.wss?uid=swg21606838 If a db2fmp entry is logged in the db2diag.log, the entry should contain the process ID (PID) and thread ID (TID). Below is a sample of a db2diag.log entry which identifies the... [More]

Tags:  im_techtip d2pd routine db2 function defined stored procedure luw user udf jdbc

DB2 LUW is capable of running Java applications as stored procedures or user defined functions (Stored Procedures and UDFs are collectively referred to as routines). When a Java routine is invoked DB2 will load the class and start a JVM in a process called the db2fmp. Unlike other DB2 processes, this process is owned by the fenced user, so it is necessary for  the fenced user ID to have access to the libraries containing the application classes and the JVM. By default the JDK that is shipped with DB2 is used.  You can use a JDK other... [More]

Tags:  luw udf stored routine function jdbc db2 user im_techtip defined procedure