Oracle: Find The Total Size Of All Of Your CLOB & BLOB Columns In All Tables

Today I received a request from an application owner who wanted to know the size of all the CLOB and BLOB columns in all the non-system tables so that they have a good idea of the size involved for a migration. Tables with BLOB/CLOB columns The SQL to find the tables with the BLOB/CLOB columns … Continue reading Oracle: Find The Total Size Of All Of Your CLOB & BLOB Columns In All Tables

Advertisements

Eating An Elephant – How To Work With Huge Datasets In Oracle And SQL Server

Simplifying complex problems is difficult but when done, the rewards are definitely worth it. How I single-handedly managed to migrate 55 Billion rows in 4000+ tables: Last year, I created PowerPump a PowerShell based data copy server which continuously migrated 4000+ Oracle tables to SQL Server. It was no simple task given that I had … Continue reading Eating An Elephant – How To Work With Huge Datasets In Oracle And SQL Server

Oracle – Simple/Reusable Statement Runner Using PL/SQL Table Type (Collection)

In an Oracle anonymous block based script, how many times do you run into situations where what needs to be done remains a constant but what that logic works with, keeps changing? Parameters are a great way to do it too but in the illustration below, we are going to use PL/SQL table type (collection). … Continue reading Oracle – Simple/Reusable Statement Runner Using PL/SQL Table Type (Collection)

Oracle – Easy Date Strings (and NOT)

Whenever I type in a date strings in Oracle, I convert the strings to Date data┬átype in my code as well as my queries without relying on the session setting for date format. I will explain why. Session date format setting: Session date format settings govern how date strings should be converted into dates (the … Continue reading Oracle – Easy Date Strings (and NOT)

Hard-coding Values In SQL Code – Please Don’t

What is hard-coding? Wikipedia defines it as below Hard coding (also, hard-coding or hardcoding) refers to the software development practice of embedding what may, perhaps only in retrospect, be regarded as input or configuration data directly into the source code of a program or other executable object, or fixed formatting of the data, instead of … Continue reading Hard-coding Values In SQL Code – Please Don’t