Database Administration & Monitoring

pg_dump: [archiver (db)] query failed: ERROR: schema “sys” does not exist

As I could not find any information about this error when I faced it this is just a short hint: If you try to use pg_dump or pg_dumpall out of a(…)

Parallel sequential scans are coming to PostgreSQL

It didn’t made it into the upcoming PostgreSQL 9.5 release but it will probably be coming in 9.6: Parallel sequential scans. If you take a look at the development documentation some new parameters showed up: max_parallel_degree: The(…)

Monitoring tools for PostgreSQL – POWA

The last posts introduced the logging system, pg_stat_statements, pg_activity and pgcluu. This post will look at POWA: PostgreSQL Workload Analyzer. For getting the most out of POWA the following extension(…)

Monitoring tools for PostgreSQL – pgcluu

The last posts introduced the logging system, pg_stat_statements and pg_activity. All of these can be used to monitor sql statements the PostgreSQL server is executing. In this post I’ll look into pgcluu:(…)

SQL Monitoring in PostgreSQL (3) – pg_activity

The last posts looked at how the logging system and the pg_stat_statements extension can be used to monitor sql statements in PostgreSQL. This post will introduce pg_activity which is very similar to(…)

SQL Monitoring in PostgreSQL (2) – pg_stat_statements

The last post looked into how you can monitor queries using the logging system. This post will introduce pg_stat_statements. pg_stat_statements is a module that needs to be loaded and is not available in(…)

GoldenGate 12.2 additional column on the target

My colleague Hervé last week posted a blog concerning a bug in GoldenGate 12.1. You can find the blog here. In fact the problem is that GoldenGate works with the column position and not with the column(…)

SQL Monitoring in PostgreSQL (1) – the logging system

When developing an application as well as when the application is in production there is the need to identify long running queries. In Oracle one tool you might use for that is the SQL Monitor. In this post I’ll(…)

GoldenGate 12.2 new parameter ALLOWOUTPUTDIR

I will start a series of blog posts about the new features of GoldenGate 12.2. This first blog will be concerned by the new parameter ALLOWOUTPUTDIR. When I tried GoldenGate 12.2 for the first time, I reused the same configuration(…)

Manipulate Stretch database feature by script

On November 30th, I presented the Stretch Database feature in “Les Journées SQL Server 2015” in Paris. I explained how to manage by script this new feature in SQL Server 2016 CTP 3.0 I decided to share you my(…)