Hi DB2 user,
Here is a non-profit Blog about DB2 for z/OS (IBM mainframes):
Last update on Monday, January 11th 2010
IBM just published a new Redbook, "DB2 9 for z/OS: Resource Serialization and Concurrency Control, SG24-4725-01":
Locking is the generic term used to refer to the database management system function that is required for managing interprocess concurrency and maintaining data integrity. However, locking is just one of the serialization mechanisms available in IBM DB2 for z/OS. DB2 uses different mechanisms for serialization to achieve its goal of maximizing concurrency without losing integrity with a minimum cost in CPU, I/O, and storage resources.
In this IBM Redbooks publication, we review and explore the different serialization mechanisms used in DB2, such as transaction (DML) locking, claims and drains, restrictive states, latching, and optimistic serialization.
This book was written for application developers in order to help them better understand serialization mechanisms and how they influence application design decisions.
Table of Contents
Part 1. Concurrency and integrity
Chapter 1. Serialization
Chapter 2. Transaction locking
Chapter 3. Serialization techniques
Part 2. Application concurrency and lock optimization
Chapter 4. Database design considerations
Chapter 5. Application design
Chapter 6. Utilities, commands, and SQL
Chapter 7. System considerations
Part 3. Monitoring and problem determination
Chapter 8. Identifying locking and concurrency problems
Chapter 9. Analyzing concurrency problems
Part 4. Data sharing
Chapter 10. Global locking
Chapter 11. Monitoring data sharing locking activity
Chapter 12. Database and application design in data sharing
Appendix A. System topology and workload
First edition of this Redbook was published in August 1996.
Your E-mail and More On-the-Go. Get Windows Live Hotmail Free.
* IDUG North America * Tampa, Florida, * May 10-14 2010 * http://IDUG.ORG/NA *
http://www.IDUG.org membership is now free.
Do you have people in your office who are not an IDUG member?
Show them how to access the information and help train the next generation of DB2 Users!
If you need to change settings, http://www.idug.org/cgi-bin/wa?A0=DB2-L is the home of IDUG's DB2-L