A Day in the Life of a DBA

A day in the life of a DBA is usually quite hectic. The DBA maintains production and test environments, monitors active application development projects, attends strategy and design meetings, selects and evaluates new products, and connects legacy systems to the Web. And, of course: Shyam in Accounting, he just resubmitted that query from hell that’s bringing the system to a halt. Can you do something about that? All of this can occur within a single workday.

To add to the chaos, DBAs are expected to know everything about everything. From technical and business jargon to the latest management and technology fads, the DBA is expected to be “in the know.” And do not expect any private time: A DBA must be prepared for interruptions at any time to answer any type of question—and not just about databases, either.

When application problems occur, the database environment is frequently the first thing blamed. The database is “guilty until proven innocent.” A DBA is rarely approached with a question like “I’ve got some really bad SQL here. Can you help me fix it?” Instead, the DBA is forced to investigate problems where the underlying assumption is that the DBMS or perhaps the DBA is at fault, when the most common cause of relational performance problems is inefficiently coded applications.

Oftentimes the DBA is forced to prove that the database is not the source of the problem. The DBA must know enough about all aspects of IT to track down errors and exonerate the DBMS and database structures he has designed. So he must be an expert in database technology, but also have semiexpert knowledge of the IT components with which the DBMS interacts: application programming languages, operating systems, network protocols and products,transaction processors, every type of computer hardware imaginable, and more. The need to understand such diverse elements makes the DBA a very valuable resource. It also makes the job interesting and challenging. Actually, the job isn’t as bad as it sounds. The work is interesting, there is always something new to learn, and, as previously mentioned, the pay can be good. The only question is: Can anyone do this type of job for twenty or more years without needing a rest? And, oh, by the way, I think I hear your mobile is ringing , so you might want to pause here to see what is wrong.

LAST EDITED on July 2005