Infrastructure at your Service
PostgreSQL 13 is just around the corner and one little, but important feature that was added are trusted extensions. When you want to add an extension to a database you need to be superuser for most of the extension or you need to implement something like this (please also note the comment from Hans at the bottom of the blog). This is where this new feature helps: If extensions are marked as “trusted” you do…
What if you could clone a PostgreSQL database instantly without affecting the original source database, without impacting performance, without any external tool but using your linux Btrfs storage layer. This is what I will demonstrate in the following blogpost.
In PostgreSQL you have several ways of working with files and you can find quite some examples here on our blog, e.g. Modifying pg_hba.conf from inside PostgreSQL, Can I do it with PostgreSQL? ā 4 ā External tables or Working with files on the filesystem in PostgreSQL. There is also copy which allows you to load or unload tables and there is the adminpack extension which is the topic of this post.
Hi everybody, I get an issue on my VM today , so that I canāt open it anymore. When trying aĀ system restore I get the same state. I was really embarrassed to fail to restore my VM (as a huge work was done on it) Below we will see how to fix this issue Issue description Investigations I have checked the VM folders , still got the snapshots but canāt even load them :/…
By Franck Pachot . I’ve written a blog post about serverless databases and here is an example of Amazon RDS Aurora PostgreSQL in serverless mode: When I’ve created the instance (15:55 – CloudWatch is GMT+2 but event log is UTC), it started with 0 capacity unit (18:03), which means that it was paused (you pay for storage only). Then I connected and the instance was resumed (18:19) to its maximum capacity unit (4 here). And…
By Franck Pachot . When I’m writing about a product I like to be precise about the name, the upper and lower case, and even more: do you know that was taking special care of writing Oracle 12cR2 before then non-italic came with 18c? And that’s also the reason I’m not writing a lot about VMware as it takes me 5 minutes to put the uppercase right š You may have seen that many Amazon…
The ODA X4 is still in use for some customers. The last time I was asked to validate the backups . Let me explain the context. Actually the backups are done via RMAN on local in a NFS share. After these backups are backep up by Netback on tape. The goal was just to validate that the backups done by Netback can be used to restore if needed. So the backup teams restored the backups…
By Franck Pachot . I’ve always been working with databases. Before the cloud era, the most abstract term was “data”. A variable in memory is data. A file is data. A block of disk contains data. We often created a ‘/data’ directory to put everything that is not binaries and configuration files. I’ll always remember when I did that while working in Dakar. My colleagues were laughing for minutes – my Senegalese followers will understand…
By Franck Pachot . There are many NoSQL databases. And, because SQL is an ISO standard, “No SQL” also means “No Standard”. Many have a similar API and similar objects, but with completely different names. Today, NoSQL databases are used as an additional datastore for some well-defined use cases for which a hashed key-value store fits better than a relational table. And it quickly became “Not Only SQL” as it is complementary to RDBMS databases…
Continuing from my first blog we will check some more access and authentication configurations. Focusing on removing unnecessary database privileges. After that we will configure the backend parameters correctly to have more robust PostgreSQL server/client sessions. And at last SSL encryption for these sessions will be configured.
Starting with PostgreSQL 13 there is a name and value change of one of the parameters used for the streaming replication of a replica server. Some may already know which parameter I am talking about. Until Postgres 12 it was called “wal_keep_segments” but with PostgreSQL 13 it will become “wal_keep_size”. In this small post I will explain, what changed and which nice new feature Patroni 2.0 offers us to not get in trouble using old…
In an Oracle 20c Data Guard environment with a broker configured we can have following files called client-side broker files -The observer configuration file : observer.ora -The observer log file -The observer runtime datafile: fsfo.dat -The fast-start failover callout scripts (new feature in Oracle 20c) Before Oracle 20c, there was no default location for these files. Starting with Oracle 20c, now we can define a default location for all these files by setting an environment…
