What Are SQL Plan Directives?
March 7, 2018If you ever looked at an execution plan in Oracle 12c, most likely you noticed the following line, at the… Continue Reading
Category: Oracle
How To Find The SQL ID Of The Statement You Just Ran?
February 21, 2018Have you ever had to determine the SQL ID of the query you just ran? I am not talking about… Continue Reading
Declutter Your Database The Right Way
February 7, 2018I don’t like clutter, whether it is in my home or database. So when a project manager (PM) came to… Continue Reading
What Is The Relationship Between SCNs and DB Links?
January 24, 2018Have you ever checked the value of the SCN number – System Change Number in your databases? Were you surprised… Continue Reading
3 Things You Wish You’ve Learned In School About Oracle’s SCN
January 17, 2018There are things you don’t learn in school. There are things you hear about in school, that are not explored… Continue Reading
So You Think You Can Gather Stats?
December 6, 2017I have covered lots of topics on Oracle Optimizer Statistics. I’d like to summarize everything you learned, or reviewed in… Continue Reading
How To Compare Current Stats With Stats From History?
November 29, 2017Imagine this. You get a call. A specific SQL statement is running slow today, and the statement was running fine… Continue Reading
4 Things To Know About Statistics History
November 22, 2017By default, whenever new statistics are gathered in the database, the existing statistics are backed up in the data dictionary.… Continue Reading
What Type Of Stats To Gather (Bonus Script)
November 15, 2017How do you gather statistics in your database? Do you gather statistics randomly when you remember, or do you gather… Continue Reading
How Are Statistics Gathered In The Database?
November 8, 2017Do you gather statistics regularly for your databases? Do you gather statistics explicitly, with your own script, or do you… Continue Reading