Oracle Exalogic vServer Hung – Running xm dump-core

Have you been tasked with capturing a dump of a VM? Are you running an Oracle VM implementation? Are you using an Oracle Exalogic? Here I’ll show you what options we have to use and my recommended methods to provide the data to support (assuming that is why you are attempting the capture of the […]

You (oracle) are not allowed to use this program (crontab)

Here is the message being faced on our x3-8 Exadata (Note that this can happen on any linux system): [root@ex01db01 etc]# su – oracle [oracle@ex01db01 ~]$ crontab -l You (oracle) are not allowed to use this program (crontab) See crontab(1) for more information Some MOS note that describe NON-ROOT users having difficulty using crontab: Non […]

Downgrading ZFS Appliance Software

What is a ZFS appliance? Oracle ZFS Storage Appliance is a hybrid storage system based on a unique cache-centric architecture featuring massive DRAM plus Flash, and is powered by a multithreaded SMP operating system. As a result, 70 to 90 percent of I/Os are served from DRAM, enabling customers to use Oracle ZFS Storage Appliance […]

Upgrading ZFS Appliance Software

What is a ZFS appliance? Oracle ZFS Storage Appliance is a hybrid storage system based on a unique cache-centric architecture featuring massive DRAM plus Flash, and is powered by a multithreaded SMP operating system. As a result, 70 to 90 percent of I/Os are served from DRAM, enabling customers to use Oracle ZFS Storage Appliance […]

Uploading ZFS Appliance Software Patch

What is a ZFS appliance? Oracle ZFS Storage Appliance is a hybrid storage system based on a unique cache-centric architecture featuring massive DRAM plus Flash, and is powered by a multithreaded SMP operating system. As a result, 70 to 90 percent of I/Os are served from DRAM, enabling customers to use Oracle ZFS Storage Appliance […]

Configure Exadata storage cell to receive email notifications

As an Exadata DBA and sysadmin this is one of those important, most crucial configurations you can make for monitoring your storage cells.  Sure the Exadata plugin for EM12C provides alot of information and similar alerting, I have never put all my eggs in one basket.  Setting up SMTP alerting on the storage cells is […]

Exalogic Reference Guide

For those of you interested in learning Exalogic (physical/virtual) I highly recommend reading up on the: Machine owners guide and the Cloud Administrator guide. The guides and documentation can be found here:  http://docs.oracle.com/cd/E18476_01/index.htm Exalogic is a very intense product that includes every possible component in a datacenter and combines it into 1 rack. This page […]