One of our clients has a JCC application going through a DB2 Connect gateway connecting to DB2/Z database, instead of direct connection to DB2/Z. They wanted to know how to setup the automatic client re-route(ACR) if the DB2 Connect goes down.
Here are the steps:
In the case of the DB2 Connect server, because there is no requirement for the synchronization of local databases, you only need to ensure that both the original and alternate DB2 Connect servers have the target IBM mainframe database cataloged in... [More]
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... [More]
If you need regular database backup during night or weekends, use DB2 automatic maintenance feature.
Here is DB2 V9.7 Information Center URL:
1) How automatic maintenance job run?
The automatic maintenance feature has two phases. 1) Evaluation and 2) Execution.
1) Evaluation: Check whether we do task. Evaluation activity starts in every 2 hours since database is activated.... [More]
Using a simple test case. This can be easily observed. Document was exported using a utility that applies a byte order mark to text documents.
db2 "create table numbers (col1 char(10),col2 char(10),col3 char(10))"
DB20000I The SQL command completed successfully.
[db2v97@ts-carose2 ~]$ db2 import from numbers.csv of del insert into numbers
SQL3109N The utility is beginning to load data from file "numbers.csv".
SQL3110N The utility has... [More]
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command fails with:
"Changing data structure forced command termination."
The db2diag.log shows the following:
2014-04-15-126.96.36.1996033+000 E1831A690 LEVEL: Error
PID : 34275574 TID : 1 PROC : db2pd
INSTANCE: test006 NODE : 000
EDUID : 1
My friends contact me to ask db2 issues. Most of them are known issues or not difficult (at least I think) enough to be resolved by themselves. The main reason is that they don't have enough information where the documents are.
I'm writing a document for db2 troubleshooting before you are prompted to open DB2 ticket for defect. DIY and save time with the following URL addressing Frequently Asked Questions and known issue on OS.
1) If you use Linux or Oracle Solaris, check whether your OS is supported.
- DB2... [More]
I would like to share with our readers the license issue that one of our customers ran into.
Its straightforward and I'm sure you have seen this license problem before and know to resolve it but I would like to show the symptoms, what options we had, which one did we choose to fix the license error .
The product installed was DB2 10.1 Enterprise Server Edition (ESE) as seen here below:
Product name: "DB2... [More]
Traditional BIND command is not part of the IBM Data Server Driver Package.
You can use the DB2BINDER utility to bind packages from the IBM Data Server Driver Package.
You can follow the below steps:
Open the DOS command window. Change the directory to your IBM Data Server Driver Package's bnd directory. e.g. C:\Program Files\IBM\IBM DATA SERVER DRIVER\bnd
Run the DB2Binder command from that directory.
C:\Program Files\IBM\IBM DATA SERVER DRIVER\bnd>java... [More]
For most of us, we refer the word ' ARCHIVE ' in DB2 to DB2 Transactional Logs archiving.
There are other items that you can archive as well. Let's explore what all we can archive:
1. DB2 Transactional Logs - This refers to DB2 transactional log archiving. I assume you are familiar with this concept. Hence I won't discuss it in detail here. If you have any question, please feel free to ask us. You can add a comment to this article at the bottom.
2. DB2 Diagnostic Logs Archiving -... [More]
I am quite sure that most of you are using 'svmon' utility with various option to monitor the memory utilisation on AIX box. The most useful option I found is 'P'. It quickly shows you the approximate memory consumption at process level:
$ svmon -G
size inuse free pin ... [More]
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:
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... [More]
Last week, I ran into a customer problem where the 32-bit ODBC User DSN test from 32-bit ODBC Data Source Administrator (C:\Windows\sysWow64\odbcad32.exe) for a remote database running on AIX was failing with below error with 32-bit DB2 Data Server Driver Package 9.7 FP0 on Windows 7 64-bit:
We tried to create a new User DSN from 32-bit ODBC Data Source Administrator, but we could not, since it failed with the same error.
On their Windows XP, machine they have the same setup, the DSN... [More]
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:
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... [More]
Continuous availibility is the concept that enables 24/7 access to IT-enabled business functions, processes and applications.
And minimizing planned downtime is what business and IT departments consider seriously nowadays.
Especially, minimizing and setting the appropriate downtime is a bit challenging decision in case of DB2 version upgrade or migration to another system, because we also need to consider the time for getting back to original system in preparation for any unexpected problem after the planned change... [More]