Author Archives: TJ

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OEM 12c Cloud Control Installation in RHEL !!!

On July 25, 2012, Posted by , In 12c, By , , With No Comments

In this article, we assume that you have already configured an Oracle 11gR2 (11.2.0.3) database. Below are the details of the system that we will be using for OEM 12c installation. Hostname – oem12c Database Name – oem Database Version – 11.2.0.3 ======================================================================================================   Preinstallation Requirements for Oracle Enterprise Manager…

Deleting a Node from 11gR2 RAC !!!

On July 22, 2012, Posted by , In 11g, By , , With 1 Comment

In this article, we will see the steps for deleting a node from 11gR2 RAC cluster. To delete a node we have to first remove the database instance, then the Oracle home and finally the grid infrastructure home. The cluster here is a 4 node Oracle 11gR2 RAC. Here the…

Configure iSCSI Disks using Openfiler !!!

On July 7, 2012, Posted by , In Others, By ,, , With 4 Comments

In this article, we will configure iSCSI disks using Openfiler software. We assume that the Openfiler Software has been already installed. The Openfiler version used here is openfiler-2.3 (64 bit). ======================================================================================================   – Start the below services to access Openfiler through web interface. # service httpd start # chkconfig httpd…

Oracle 11gR2 RAC installation on RHEL 5.8 !!!

On June 30, 2012, Posted by , In 11g, By , , With 9 Comments

In this article, I am going to configure a four node Oracle 11gR2 RAC cluster, all nodes running RHEL 5.8-64 bit. The network storage server will be configured as an iSCSI storage device for all Oracle Clusterware and Oracle RAC shared storage requirements using Openfiler release 2.3 (64 bit). We…

Snapshot Standby Database Feature in 11gR2 !!!

Snapshot Standby is a new feature introduced in 11gR2 that allows the standby database to be opened in read-write mode. When switched back into standby mode, all changes made whilst in read-write mode are lost. This is achieved using flashback database, but the standby database does not need to have…

Oracle 11gR2 DB Installation on RHEL using ASM !!!

In past releases, Oracle ASM was installed as part of the Oracle Database installation. With Oracle Database 11g Release 2 (11.2), Oracle ASM is installed when you install the Oracle Grid Infrastructure components and shares an Oracle home with Oracle Clusterware when installed in a cluster such as with Oracle…

Add a New Node to an existing Oracle 10gR2 RAC !!!

On June 14, 2012, Posted by , In 10g, By , , With 2 Comments

The below article contains the steps to add a single node to an already configured two-node Oracle RAC 10g Release 2 environment on the RHEL 5.4 32-bit (x86) platform. This is an extension to my article Oracle 10g RAC installation on RHEL using NFS Disks. ======================================================================================================   This article assumes…

Dataguard configuration using Active Database feature !!!

Data Guard is an Oracle feature that primarily provides database redundancy. This is done by having a standby (physical copy) database, preferably in another location and on separate disk. This standby database is maintained by applying the changes from the primary database to it. Standby databases can be maintained with…

DNS Server configuration steps for 11gR2 RAC on RHEL !!!

On May 9, 2012, Posted by , In LINUX, By ,, , With No Comments

DNS (Domain Name System) – The Domain Name System (DNS) is a hierarchical distributed naming system for computers, services, or any resource connected to the Internet or a private network. It associates various information with domain names assigned to each of the participating entities. A Domain Name Service translates queries…

Oracle 10g ASM Installation Steps in RHEL !!!

On January 29, 2012, Posted by , In 10g, By ,, , With 2 Comments

ASM i.e. Automatic Storage Management simplifies administration of Oracle related files by allowing the administrator to reference disk groups rather than individual disks and files, which ASM manages internally. On Linux, ASM is capable of referencing disks as raw devices or by using the ASMLib software. In this article, we…