Saying What You Mean

Ah, the perils of working in a shared, client environment. One client has us using a login that is not exclusive to us. I prefer using bash; the client is set to use zsh. This is not a problem in and of itself. However, there is a section in the .profile that is causing me issues, let me show you.

Hating MySQL for the Wrong Reasons

In Spotting the Wolf in Sheep’s Clothing, Frank Mash writes about a specific person who is spreading fear, uncertainty and doubt about MySQL. Now, this always gets me, especially with MySQL. For how long will MySQL be the bastard stepchild of the database world? Because really, it’s been a full-fledged DBMS for at least 5 years. Don’t hate MySQL for the wrong reasons and there are plenty of reasons to hate MySQL. But hating MySQL because “it sucks” or because “it doesn’t have blah feature” — which, 9 times out of 10, it has — is just wrong.

Does MySQL Send Passwords In the Clear?

I was asked this question recently, and I thought it was a great little tidbit of knowledge to pass along. The short answer is “no”. The slightly longer answer was written up by Jan Kneschke when dealing with a forum post about proxy + connection pooling.

MySQL Conference Sessions

At this year’s MySQL Conference & Expo, taking place in Santa Clara, California in mid-April, I’m giving two sessions: Best Practices for Database Administrators,Database Security Using White-Hat Google Hacking. You can see more info about me here, including descriptions of the workshops.

Multiple Connections Bringing MySQL to a Halt

I was asked this question in an e-mail — feel free to ask your questions in the comments, as I will point the original author to this post to answer those questions. There is not a lot of data here, so instead of me asking questions in an e-mail I figured I would open it up to the (MySQL) world. Without further ado, here’s the question…

Stabilize Oracle 10G’s Bind Peeking Behaviour

I wrote this post because I feel there is a great need for it. The number of people struggling with unstable query plans due to bind peeking in Oracle 10G is enormous, to say the least. More than that, solutions like disabling bind variable peeking are driving us away from understanding the root cause of the problem and applying the right fix to it.

Using RDA 4.11 in a RAC Environment

RDA 4.11 is out, with a couple of new features. “Oracle Database Diagnostics Collector” (ORADDC) is one of those. It allows you to easily activate all kinds of traces, dumps, or stack collections. This may become one of the most used RDA modules for Oracle Support Services and Oracle database administrators stuck in different situations. For now, let’s start with a more basic question: “How to leverage RDA in a RAC environment ?”

Solaris Containers and MySQL

We’ve been running into a problem with one client: SELECT COUNT(*) FROM tbl; takes 0.25 seconds on one db, and 0.06 seconds on another.
Consistently. That’s a fourfold difference. There aren’t any significant configuration differences (like query cache, etc.), the software versions are the same, and the table fits into memory. This has been looked at by at least 3 in-house MySQL experts, and the only thing we can determine is that it’s a hardware difference.

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