Linux

OTN Appreciation Day : OSWatcher Black Box Analyzer (OSWBBA)

Following my last blog post about OSWatcher, I will present in this one OSWatcher Black Box Analyzer (OSWBBA), which is the tool that you can use to display graphically the data collected by OSWBB. This tool is(…)

OTN Appreciation Day : OSWatcher Black Box (OSWBB)

In this post, I will present a usefull and easy-to-use Oracle tool : OSWatcher. What is it ? OSWatcher Black Box (OSWBB), for its full name, is a free Oracle Tool which will help you to diagnose(…)

Running PostgreSQL on ZFS on Linux – Compression

In the last posts in this little series we looked at how to get a ZFS file system up and running on a CentOS 7 host and how snapshots and clones can be used(…)

Running PostgreSQL on ZFS on Linux – Fun with snapshots and clones

In the last post we looked at how to get a ZFS file system up and running on a CentOS 7 host and how to enable the auto mount of the ZFS file systems. In this post(…)

Running PostgreSQL on ZFS on Linux

ZFS for Solaris is around for several years now (since 2015). But there is also a project called OpenZFS which makes ZFS available on other operating systems. For Linux the announcement(…)

List usernames instead of uids with the ps command for long usernames

By William Sescu Have your ever faced such a situation. You have usernames in your /etc/passwd file with more than 8 characters. This is no problem for Linux at all, usernames may be up to 32 characters long, only your(…)

How to do a Filesystem Resize (ext3/ext4) on Redhat running on VMware

By William Sescu A filesystem resize can be done in several ways, online, offline, with LVM2 or without LVM2.  However, this blog will describe how to do an online resize of ext3/ext4 filesystems where a virtual disk (vmdk) is online(…)

LVM : How to extend a Volume Group

In this article we’ll going to explore on how to extend a partition which resides in a Logical Volume. LVM (Logical Volume Manager) is a great tool for managing your storage devices on a Linux host. Lets(…)

Mail mit Format und Priorität aus Linux

Ausgangslage Ein Kunde hat mit kürzlich danach gefragt, wie ich den Output eines Scripts auf einer Linuxplattform per Mail sauber formatiert versenden kann. Als Beispiel nehmen wir folgendes: ____________________________________________________________________________________________________________________ File System free space on fed22v1.localdomain ____________________________________________________________________________________________________________________ | | | Mb-Total(…)