IBM has a comprehensive new Redbook for Q Replication that should appeal to both new and long-time users. It builds on a Redbook published several years ago, but is not a simple dusting off of an old book. Instead, the writers took the time to pick the brains of experts at IBM's Silicon Valley Lab and add information that's never been published. They've also worked hard to make sure the entire Redbook is easily understood by new users. One example I like is this new graphic that shows the 10 factors that affect end-to-end data replication latency:
People always want to understand this stuff, but it's never been shown so clearly, especially the details around MQ. To make sure you follow the graphic, the Redbook discusses each numbered point individually. Another area I like is the chapter called "Managing Q Replication in a DB2 z/OS Environment". Lots of good stuff there. I believe it will be a huge help to mainframe shops that have Q Replication in production.
You can read or download the Redbook at the following link:
Understanding and Using Q Replication for High Availability Solutions on the IBM z/OS Platform