Even Oracle Certified DBAs cringe at the thought of performing a real-world database recovery. As disk and hardware has become super-stable, many Oracle DBAs have never experienced the adrenaline rush of a full-blown Oracle recovery.
Making database connections are expensive in terms of machine resources. In this article, we will examine how a number of connections can be cached in a pool, and then used for accessing the database.
Many Oracle shops are plagued with slow I/O intensive databases, and this tip is for anyone whose STATSPACK top-5 timed events shows disk I/O as a major event.
I've recently been reading Bert Scalzo's "Oracle DBAs Guide To Data Warehousing And Star Schemas", and he's got an interesting take on the ETL process that I thought it worth looking at in more detail.
This article explores the fundamentals of a transaction, in the context of JDBC, Enterprise Java Beans and a database.
With Oracle Database 10g, there are some new arguments available for the dbms_stats package subprograms. Those parameters are as follows:
Advisors are the server components that provide you with useful feedback about resource utilization and performance. The most important of all advisors is the Automatic Database Diagnostic Monitor (ADDM). ADDM does analysis of the system, identifies problems and their potential causes, and comes up with recommendations for fixing the problems. It can call all other advisors also.
In this article (chapter) we will look at new features surrounding the DML commands INSERT, UPDATE, and DELETE.
Just a few years ago, many senior Oracle DBAs detested Oracle Enterprise Manager (EM). Viewed as a crutch for beginners who could not memorize the command syntax, EM was largely ignored by the veteran DBA who preferred the ease and certainty of the SQL*Plus command-line interface. This is about to change.
Two improvements have been made in the backup and recovery areas in Oracle 10g. When user errors and logical corruptions occur in the database, flashback functionalities provide fast and flexible data recovery. When physical or media corruption occurs in the database, RMAN delivers an improved and simplified recovery method.