Search for	Example	Results
A single word	`cat`	Topics that contain the word "cat". You will also find its grammatical variations, such as "cats".
A phrase. You can specify that the search results contain a specific phrase.	`"cat food"` (quotation marks)	Topics that contain the literal phrase "cat food" and all its grammatical variations. Without the quotation marks, the query is equivalent to specifying an OR operator, which finds topics with one of the individual words instead of the phrase.

Search for	Operator	Example
Two or more words in the same topic	`AND` `and` `+` (plus symbol) `&` (ampersand)	`cat AND dog` `"cat food"+milk` `"cat food"&"dog food"`
Either word in a topic	`OR` `or` `\|` (pipe)	`cat OR dog` `cat \| dog`
Topics that do not contain a specific word or phrase	`NOT` `not` `!` (exclamation point)	`NOT cat` `! dog`
Topics that contain one string and do not contain another	`^` (caret)	`cat ^ mouse`
A combination of search types	`( )` parentheses	`cat + (dog \| mouse)` `cat \| dog + (! mouse)`

Universal CMDB11.0

Use > Database > Deploying the Oracle Server Database > Real Application Cluster Support > About Oracle Real Application Cluster (RAC)

About Oracle Real Application Cluster (RAC)

A cluster is a collection of interconnected servers that appear as one server to the end user and to applications. Oracle Real Application Cluster (RAC) is Oracle's solution for high availability, scalability, and fault tolerance. It is based on clustered servers that share the same storage.

Oracle RAC is a single Oracle database installed on a cluster of hardware servers. Each server runs an instance of the database and all the instances share the same database files.

For more details about Oracle RAC, refer to the Oracle Clusterware Guide and the Oracle Real Application Clusters Administration and Deployment Guide in the Oracle documentation set of your release.

In this chapter, the following Oracle RAC example is used:

Oracle RAC database name: UCMDBRAC
Machine names: Server1, Server2
On each machine there is an Oracle instance of UCMDBRAC:
- SID on Server1: RAC1
- SID on Server2: RAC2
On each machine there is a virtual IP (Server1-Vip and Server2-Vip):
- Server1-Vip is assigned to Server1
- Server2-Vip is assigned to Server2
The virtual IP is in addition to the static IP assigned to the machine.
The listeners on both servers are listening on the default port 1521 and support the database service UCMDBRAC.

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