Tag: IBM

Community

Trigger basics in DB2 and OS/390

(Craig Mullins) TableA is a high transaction table. TableB is essentially a copy of TableA with indexes for reporting. I want to create an insert/update trigger on TableA to replicate the change to TableB. I’m worried about performance. Mainly, will TableA be locked up until the commit on TableB

Community

The Hitchhiker’s Guide to DB2

(Craig S. Mullins) DB2 is a complex piece of system software that can be very intimidating for users to learn and master. There are a lot of details, parameter, syntax choices, and manuals that need to be understood. Difficulties can arise for a number of different reasons. This hitchhiker’s gui

Community

Part 2: Tuning Informix SQL

(Jianing Fan) This is the second of a two-part series on tuning Informix SQL. Part 1 introduced guidelines for SQL query tuning for Informix, looked at factors you need to consider when tuning SQL queries, and examined some real life tuning examples gathered from the author’s experience. Now the