When learning to use and administer Linux, you may often get a strange answers to your questions to other administrator: RTFM… So reading the manual should be the magic answer. But what about Linux channel bonding? For Redhat 6 and Oracle 6, the answer is clearly… NO While setting two new
Facing disk issues such as corruption or block defect is thankfully not happening frequently. However when it does, the diagnose may look sometimes like a real struggle. This is forgetting that disks integrate since years the S.M.A.R.T technology. Good point, it can easily be adressed in Linux command line through smartctl What is S.M.A.R.T. exactly? S.M.A.R.T., which stands for Self-Monitoring, Analysis and Reporting Technology (also called SMART), is a monitoring system for and integrated in…
Introduction Often some times after having setting up a replication environment, it is needed to add additional tables to the replication, where the additional tables have dependency with the current replicated tables. This tasks must be implemented without disturbing the current replication environment Explanation In this example the below tables from schema G001 on Database PROD1 will be added, to an existing Replication from PROD1 to REP CFG_ADV_COND CFG_NARRATIVE_TEMPLATE CFG_REG_REPORT_RULES CMN_LOOKUP CMN_USER_LOGIN Stop the replication…
During one of my recent missions I had the opportunity to install Red Hat 6.1 on a ESX Virtual Machine. During the installation process I got a strange message: “unable to read group information from repositories”. If you also encounter such a problem this article may help you..
Who never had to measure the disk performances on a system?
Speaking about Linux performance monitoring includes a significant part on disk performances. If you are facing applications or databases running slower than expected or than on other environments, you may take a look on the I/O performances.
This blog aims to provide to introduction to a pretty interesting tool, iozone…
I have been advising to use Perl for a long time in order to automate Oracle processes and operations. This week however, I tried for once to write a small procedure on a simple Linux shell (ksh and bash). This posting focuses on the shell internals and “nightmare” more than on Oracle related issues.
I’m pretty sure that most of you already struggled with some low performance systems. In order to analyse such cases several tools and utilities, like top, nmon, fuse or lsof are available under Linux. However trying to dig in processes analysis and looking for files and processes relations may be quite painful.
To get started with performance checks and analysis, a interesting utility is available: htop