Searching the Help
To search for information in the Help, type a word or phrase in the Search box. When you enter a group of words, OR is inferred. You can use Boolean operators to refine your search.
Results returned are case insensitive. However, results ranking takes case into account and assigns higher scores to case matches. Therefore, a search for "cats" followed by a search for "Cats" would return the same number of Help topics, but the order in which the topics are listed would be different.
Words and Phrases
| Search for | Example | Results |
|---|---|---|
| A single word | cat
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Topics that contain the word "cat". You will also find its grammatical variations, such as "cats". |
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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. |
Using Boolean Operators
| Search for | Operator | Example |
|---|---|---|
|
Two or more words in the same topic |
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| Either word in a topic |
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| Topics that do not contain a specific word or phrase |
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| Topics that contain one string and do not contain another | ^ (caret) |
cat ^ mouse
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| A combination of search types | ( ) parentheses |
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Single Client Access Name
In release 11g, Oracle introduced the Single Client Access Name (SCAN), as a preferred access method for clients connecting to the RAC. In this method clients are not required to configure individual nodes in the RAC, rather they use a single virtual IP known as the SCAN or the SCAN VIP.
The SCAN is a single network name defined for the cluster either in your organization's Domain Name Server (DNS) or in the Grid Naming Service (GNS) that rotates between several IP addresses reflecting multiple listeners in the cluster. The SCAN eliminates the need to change clients when nodes are added to or removed from the cluster.
The SCAN and its associated IP addresses provide a stable name for clients to use for connections, independent of the nodes that make up the cluster. Database server SCAN addresses, virtual IP addresses, and public IP addresses must all be on the same subnet.
In
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