Tuesday, October 9, 2007

Top 50 RAC-Related Acronyms

Couple of days ago i read Eddie Award’s Post on Top 50 SOA-Related Acronyms and found it very interesting. Lately i have been working on Oracle Applications RAC environments and realized that RAC had its own set of frequently used Acronyms. In this post I have put together my 'Top 50' of the RAC Acronyms. Some of these might be related to other technologies also but they find a place in this list as they also relate RAC and Oracle Applications.

RAC (Real Application Clusters) Is Oracle Implementation of Clustered Database Instances
.
CRS (Cluster Ready Services) Oracle's own clusterware tightly coupled with Oracle Real Application Clusters (RAC).

OCFS (Oracle Cluster File System) Oracle File system Implementation For Linux and windows.

PCP (Parallel Concurrent Processing) PCP allows concurrent processing activities to be distributed across multiple nodes in an RAC environment, maximizing throughput and providing resilience to node failure.

OCR (Oracle Cluster Registry) The OCR contains cluster and database configuration information for RAC and Cluster Ready Services (CRS).

ASM (Automatic Storage Management) Simplifies database administration by enabling you to create disk groups and manage them instead of individual datafiles.

SSH (Secure Shell) SSH is a set of standards and an associated network protocol that allows establishing a secure channel between a local and a remote computer.

RSH (Remote Shell) rsh (remote shell) is a command line computer program which can execute shell commands as another user, and on another computer across a computer network.

DSA (Digital Signature Algorithm) The Digital Signature Algorithm (DSA) is a United States Federal Government standard or FIPS for digital signatures.

SCSI (Small Computer System Interface) standard interface and command set for transferring data between devices commonly used for interfaces for hard disks, and USB and FireWire connections for external devices.

NAS (Network-attached storage) Is a dedicated data storage technology that can be connected directly to a computer network to provide centralized data access and storage to heterogeneous network clients.

NFS (Network Filesystem) is a protocol allows a user on a client computer to access files over a network as easily as if attached to its local disks.

OSCP (Oracle Storage Compatibility Program) An Oracle Programe To assist third-parties with their Oracle compatibility with respect to storage devices.

DTP (Distributed Transaction Processing) DTP model is the synchronization of any commits and rollbacks that are required to complete a distributed transaction request.

VIP (virtual IP Address) is an IP address that is not connected to a specific computer or network interface card (NIC) on a computer.

TCP/IP ( Transmission Control Protocol (TCP) and the Internet Protocol (IP)

DNS (Domain Name Server) The domain name system is responsible for translating it translates domain names (computer hostnames) to IP addresses.

MAC (Media Access Control) Media Access Control address (MAC address) is a unique identifier
attached to most network adapters.

JDBC (Java Database Connectivity) A Java API that allows independent connectivity between the Java programming language and a wide range of databases.

LB (Load Balancing) Is a technique to balance the load between configured servers.

FAN (Fast Application Notification) enables end-to-end, lights-out recovery of applications and load balancing when a cluster configuration changes.

FCF (Fast Connection Failover) Fast Connection Failover provides the ability to failover connections in the connection cache as quickly and efficiently as the database itself.

TAF (Transparent Application Failover) Using transparent application recovery (TAF), Oracle can automatically reconnect users to the database in the case of instance or node failure.

OCI (Oracle Call Interface) OCI allows you to develop applications that take advantage of the capabilites of SQL from within the application.

ODP (Oracle Data Provider) ODP.NET features optimized data access to the Oracle database from a .NET environment.

ONS (Oracle Names Server) Oracle Names makes network address and database link information available to all nodes throughout the network.

ORION (Oracle I/O) ORION is a test tool freely available tool which simulates Oracle I/O.

GSD (Global Services Daemon) The Global Services Daemon (GSD) background process allows usage of Oracle Enterprise Manager or the SRVCTL utility to perform system management tasks.

NTP (Network Time Protocol) The Network Time Protocol (NTP) is a protocol for synchronizing the clocks of computer.

CVU (Cluster Verification Utility) CVU is used to verify all the important components that need to be verified at different stages in a RAC environment.

VSD (Virtual Shared Disk) A Virtual Shared Disk (VSD) facility is a layer of software that allows a processing node to access disk devices physically attached to a remote node as if those devices were attached locally.

LPARs (Logical Partitions) a Logical Partition, commonly called an LPAR, is a virtualized computing environment abstracted from all physical devices.

DBCA (Oracle Database Configuration Assistant) An Oracle utility that facilitates the creation and configuration of a database.

ORACM (Oracle Cluster Manager) allows to add new nodes to an existing cluster without having to stop/start the whole cluster.

RDA (Remote Diagnostic Agent) An Oracle Diagnostic Tool used in troubleshooting.

GFS (Global Filesystem) GFS allows a cluster of Linux servers to share data in a common pool of storage.

NIC (Network Interface Controller) is a piece of computer hardware designed to allow computers to communicate over a computer network.

LVM (Logical Volume Manager)

GPFS (General Parrel File System) GPFS is IBM’s high-performance parallel, scalable file system for IBM UNIX clusters.

HA (High Avaliblity)

MAA (Maximum Availability Architecture)

RACDDT (RAC Data Collection Tool) is a data collection tool designed and configured specifically for gathering diagnostic data related to Oracle's Real Application Cluster (RAC) technology.

OSW (OSWatcher) is an operating system diagnostic utility tool that gathers archival performance data using various native Unix utilities, such as vmstat, iostat and top.

OLS (Oracle Label Security) Oracle Label Security is developed based on virtual private database (VPD) technology and provides a flexible, fine-grained access control functionality that is achieved by comparing a sensitive label assigned to a piece of data with label authorizations assigned to an application user.

RSM (Remote Shared Memory) is a feature that bypasses the UDP/IP communication in Solaris.

UDP/IP (User Datagram Protocol) can send short messages sometimes known as datagrams to one another.

TNS (Transparent Network Substrate) Allows peer-to-peer connectivity where no machine-level connectivity can occur.

EMCA (Enterprise Manager Configuration Assistant) An Oracle tool to set up the Enterprise Manager.

OPS (Oracle Parallel Server) The OPS option allows multiple instances on different computer systems (nodes) can access the same database files simultaneously.

SRVCTL (Server Control) A utility to assist in administration and maintenance of RAC databases.
Hope you enjoyed reading them as much as I did compiling them ;)

17 comments:

prady said...

Hi Ayyu,

Your blog is really helpful.There is a request, could you post some real time interview Qn's on RAC.Since i am preparing for interview.

Thanks & Regards

Pradyumna H

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Jimmy Jarred said...

This is such a helpful article. Its great to know about all these terms related to Real Application Clusters. I am familiar with some of these but rest are totally new to me.
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Kruse said...

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