Database management

Matching SQL Plan Directives and extended stats

By Franck Pachot . This year is the year of migration to 12c. Each Oracle version had its CBO feature that make it challenging. The most famous was the bind variable peeking in 9iR2. Cardinality feedback in 11g also(…)

Variations on 1M rows insert (4): APPEND_VALUES

By Franck Pachot . In the first variation I did a bulk insert with the PL/SQL FORALL statement. A comment suggests to add the APPEND_VALUES hint that appeared in 11gR2. APPEND_VALUES hint does the same than APPEND but(…)

Rebuilt index on increasing values after deletes?

By Franck Pachot . Yesterday while giving our Oracle tuning workshop I discussed with the customer about a job they have that rebuilds indexes every Sunday. Except in very rare cases Oracle indexes are maintained so that free(…)

getting started with postgres plus advanced server (4) – setting up the monitoring server

If you followed the first, second and the third post the current ppas infrastructure consists of a primary database, a hot standby database and a backup and recovery server. Now we will add(…)

When tempdb database may cause indirect issues

A couple of weeks ago, I had an interesting discussion with one of my friend that faced a weird issue with a SQL Server instance that lacked worker threads. Because I can’t use his own information I decided to reproduce(…)

Get the main Administration Information from SQL Server with PowerShell

In my previous blog Get SQL Server services with PowerShell, I presented you the first step of the SQL Server administration through an automated process. This blog is a follow-up of the previous one, and it will focus(…)

Get SQL Server services with PowerShell

SQL Server Configuration Manager and SQL Server Management Studio are the main tools to administrate the components of SQL Server. They are very convenient to use and pretty complete. But as soon as you wish an automated process, these(…)

getting started with postgres plus advanced server (2) – setting up a backup and recovery server

The first post in this series explained how to get ppas installed on a linux system. Now that the database cluster is up and running we should take care immediately about backup and recovery. For this I’ll(…)

SQL Server Tips: How to know if In-Memory Feature is supported by your server?

A customer asks me, how to know if In-Memory Feature is supported by my SQL Server server? An easy way is to check the edition, version etc. but now, you have directly a property for that. On msdn(…)

getting started with postgres plus advanced server (1) – setting up ppas

I did several posts around postgresql and postgres plus advanced server in the past. What is missing is a beginners guide on how to get postgres plus advanced server up and running including a solution for backup and(…)