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
This is one of those obscure errors that has no answer on the Web. I ran into this error trying to migrate an Oracle table to SQL Server (one of many). The issue seemed to be only with certain rows of this table as it migrated majority of the data without issues. Below is the … Continue reading Oracle & .NET: Resolve – Exception calling “Fill” with “1” argument(s): ‘count’ must be non-negative.
As an Oracle DBA, you are very likely to get requests somewhat like this: Create an account for Sam Hill. The privileges should look exactly like Rob Nixon. If you are not into automating everything, your first instinct would be to fire-up an IDE like Toad or SQL Developer and script out the source user, … Continue reading Oracle: Clone An User With PL/SQL – Tablespace Quotas, Role Grants/Default Role, Object Grants And System Grants
I wanted to do a small post on using the DOS command line tool ADRCI to quickly locate problems from the alert log and acting on them to fix the issue(s) when using Oracle on Windows. It should not be much different on Linux. This is a 100 level post. The call: Timeouts Another normal day … Continue reading Oracle On Windows – Simple Timeout To Crisis To Moving Data Files to Another Drive
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