Database Administration & Monitoring

The Postgres Plus® Cloud Database

In the last posts (1, 2, 3, 4, 5) I looked at PostgreSQL in Amazon RDS. Another option you have if you want to go to the cloud(…)

awrrpt and spreport in multitenant

By Franck Pachot . Yesterday I was giving my 'Interpreting AWR Reports' Prezi at Oracle Midlands. There is a point where I explain that I always check the 'Captured SQL account for ...% of Total DB Time (s)' in order(…)

Avoiding access to the public schema in PostgreSQL

In PostgreSQL every database contains the public schema by default. Every user that gets created and can login is able to create objects there. Here is a little demo: I’ll create a new user named u1 which is allowed to(…)

Using the official PostgreSQL yum repositories

Usually I advice to build PostgreSQL from source as it gives the most flexibility. Another option is to use the official yum repositories. There is one repository for each supported release of PostgreSQL and(…)

OFE – Optimizer Features Enable

By Franck Pachot . Do you know the optimizer_features_enable parameter? What do you think about it? Good or bad to use it? If I tell you to set optimizer_features_enable parameter=11.2.0.4 when you upgrade to 12c, do you think it's a(…)

Execution Plan with ASH

By Franck Pachot . Here is a query I use when I'm on a system that has Diagnostic Pack (ASH) but no tuning Pack (SQL Monitor). It displays the execution plan with dbms_xplan.display_cursor and adds the % of ASH samples(…)

SQL Server AlwaysOn and availability groups : session timeout parameter

Have you ever faced to timeout issues with SQL Server availability groups? If you take a look at the timeout parameters for an availability group, you will find a plenty of configuration settings. Indeed, you have timeout parameters(…)

DataPump ‘Processing object type’ misleading messages

By Franck Pachot . You've started a long DataPump and see it stuck on TABLE/STATISTICS/TABLE_STATISTICS, but you don't expect that step to take a long time. Let's see if we can rely on that message.

About SSH keys in Oracle Public Cloud

When working with resources on the Oracle public cloud, whatever it is IaaS or PaaS, the principle access method is based on SSH keys exchange. Once our instance is created this is going to be the first and only way(…)

Launching a VM with the Amazon AWS command line tools

The cool thing with Amazon AWS is that you can use command line tools on your workstation to bring up and manage your services. In this post I’ll look into how you can launch a Linux VM from(…)