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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> <html lang="en" xml:lang="en" xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=us-ascii" /> <meta http-equiv="Content-Language" content="en" /> <meta http-equiv="Content-Style-Type" content="text/css" /> <meta http-equiv="Content-Script-Type" content="text/javascript" /> <meta name="robots" content="all" scheme="http://www.robotstxt.org/" /> <meta name="generator" content="Oracle DARB XHTML Converter (Mode = document) - Version 5.1.1 Build 026" /> <meta name="Date" content="2010-03-23T20:31:36Z" /> <meta name="doctitle" content="Oracle® Database Installation Guide 11g Release 2 (11.2) for Microsoft Windows" /> <meta name="partno" content="E10843-03" /> <meta name="docid" content="NTDBI" /> <link rel="Start" href="../../index.htm" title="Home" type="text/html" /> <link rel="Copyright" href="../../dcommon/html/cpyr.htm" title="Copyright" type="text/html" /> <link rel="Stylesheet" href="../../dcommon/css/blafdoc.css" title="Default" type="text/css" /> <script type="text/javascript" src="../../dcommon/js/doccd.js"> </script> <link rel="Contents" href="toc.htm" title="Contents" type="text/html" /> <link rel="Index" href="index.htm" title="Index" type="text/html" /> <link rel="Glossary" href="glossary.htm" title="Glossary" type="text/html" /> <link rel="Prev" href="faq.htm" title="Previous" type="text/html" /> <link rel="Next" href="index.htm" title="Next" type="text/html" /> <link rel="alternate" href="../e10843.pdf" title="PDF version" type="application/pdf" /> <title>Glossary</title> </head> <body> <div class="header"> <div class="zz-skip-header"><a name="top" id="top" href="#BEGIN">Skip Headers</a></div> <table class="simple oac_no_warn" summary="" cellspacing="0" cellpadding="0" width="100%"> <tr> <td align="left" valign="top"><b>Oracle® Database Installation Guide<br /> 11<i>g</i> Release 2 (11.2) for Microsoft Windows</b><br /> Part Number E10843-03</td> <td valign="bottom" align="right"> <table class="icons oac_no_warn" summary="" cellspacing="0" cellpadding="0" width="245"> <tr> <td align="center" valign="top"><a href="../../index.htm"><img width="24" height="24" src="../../dcommon/gifs/doclib.gif" alt="Go to Documentation Home" /><br /> <span class="icon">Home</span></a></td> <td align="center" valign="top"><a href="../../nav/portal_booklist.htm"><img width="24" height="24" src="../../dcommon/gifs/booklist.gif" alt="Go to Book List" /><br /> <span class="icon">Book List</span></a></td> <td align="center" valign="top"><a href="toc.htm"><img width="24" height="24" src="../../dcommon/gifs/toc.gif" alt="Go to Table of Contents" /><br /> <span class="icon">Contents</span></a></td> <td align="center" valign="top"><a href="index.htm"><img width="24" height="24" src="../../dcommon/gifs/index.gif" alt="Go to Index" /><br /> <span class="icon">Index</span></a></td> <td align="center" valign="top"><a href="../../dcommon/html/feedback.htm"><img width="24" height="24" src="../../dcommon/gifs/feedbck2.gif" alt="Go to Feedback page" /><br /> <span class="icon">Contact Us</span></a></td> </tr> </table> </td> </tr> </table> <hr /> <table class="simple oac_no_warn" summary="" cellspacing="0" cellpadding="0" width="100%"> <tr> <td align="left" valign="top"> <table class="simple oac_no_warn" summary="" cellspacing="0" cellpadding="0" width="98"> <tr> <td align="center" valign="top"><a href="faq.htm"><img width="24" height="24" src="../../dcommon/gifs/leftnav.gif" alt="Go to previous page" /><br /> <span class="icon">Previous</span></a></td> <td align="center" valign="top"><a href="index.htm"><img width="24" height="24" src="../../dcommon/gifs/rightnav.gif" alt="Go to next page" /><br /> <span class="icon">Next</span></a></td> </tr> </table> </td> <td align="right" valign="top" style="font-size: 90%"><a href="../e10843.pdf">View PDF</a></td> </tr> </table> <a name="BEGIN" id="BEGIN"></a></div> <div class="IND"><!-- End Header --><a id="CBAJADDD" name="CBAJADDD"></a><a id="i432525" name="i432525"></a> <h1 class="glossary">Glossary</h1> <a id="CHDBFBJA" name="CHDBFBJA"></a> <div class="glossentry"><!-- infolevel="all" --><a id="sthref885" name="sthref885"></a> <p class="glossterm">Automatic Storage Management disk group</p> <p>A set of disk devices that <a href="#CHDDCAGE"><span class="xrefglossterm">Automatic Storage Management</span></a> manages as a single unit. Each disk device can be an individual physical disk, a multiple disk device such as a RAID storage array or logical volume, or even a partition on a physical disk. You can create the Automatic Storage Management disk group when you create the <a href="#CHDGABDG"><span class="xrefglossterm">Automatic Storage Management instance</span></a>, or with Oracle Database Configuration Assistant.</p> </div> <!-- class="glossentry" --> <a id="CHDGABDG" name="CHDGABDG"></a> <div class="glossentry"><!-- infolevel="all" --><a id="sthref886" name="sthref886"></a> <p class="glossterm">Automatic Storage Management instance</p> <p>The Oracle instance that manages Automatic Storage Management disk groups <a href="#CHDBFBJA"><span class="xrefglossterm">Automatic Storage Management disk group</span></a>s. It is created automatically when you install and configure <a href="#CHDDCAGE"><span class="xrefglossterm">Automatic Storage Management</span></a>. See also Oracle system identifier (<a href="#i432435"><span class="xrefglossterm">SID</span></a>).</p> </div> <!-- class="glossentry" --> <a id="CHDDCAGE" name="CHDDCAGE"></a> <div class="glossentry"><a id="sthref887" name="sthref887"></a> <p class="glossterm">Automatic Storage Management</p> <p>Enables creation of a single disk group from a collection of individual disk devices. It balances I/O to the disk group across all of the devices in the disk group. It also implements striping and mirroring to improve I/O performance and data reliability.</p> </div> <!-- class="glossentry" --> <div class="glossentry"><a id="sthref888" name="sthref888"></a> <p class="glossterm">automatic undo management mode</p> <p>A mode of Oracle Database in which undo data is stored in a dedicated <a href="#CHDJBEHF"><span class="xrefglossterm">undo tablespace</span></a>. Unlike in <a href="#CHDEIFFI"><span class="xrefglossterm">manual undo management mode</span></a>, the only undo management that you must perform is the creation of the undo tablespace. All other undo management is performed automatically.</p> </div> <!-- class="glossentry" --> <a id="i432199" name="i432199"></a> <div class="glossentry"><a id="CBABCFIJ" name="CBABCFIJ"></a> <p class="glossterm">connect descriptor</p> <p>A specially formatted description of the destination for a network connection. A connect descriptor contains destination service and network route information.</p> <p>The destination service is indicated by using its service name for the Oracle Database or its Oracle system identifier (<a href="#BABEBJAG"><span class="xrefglossterm">SID</span></a>) for Oracle release 11.2 databases. The network route provides, at a minimum, the location of the <a href="#CBAEDCJH"><span class="xrefglossterm">listener</span></a> through use of a network address.</p> </div> <!-- class="glossentry" --> <div class="glossentry"><a id="sthref889" name="sthref889"></a> <p class="glossterm">connect identifier</p> <p>A name, net service name, or service name that resolves to a connect descriptor. Users initiate a connect request by passing a user name and password along with a connect identifier in a connect string for the service to which they want to connect, for example:</p> <pre xml:space="preserve" class="oac_no_warn">SQL> CONNECT <span class="italic">user_name</span>@<span class="italic">connect_identifier</span> Enter password: <span class="italic">password</span> </pre></div> <!-- class="glossentry" --> <a id="i432217" name="i432217"></a> <div class="glossentry"><a id="sthref890" name="sthref890"></a> <p class="glossterm">control files</p> <p>Files that record the physical structure of a database and contain the database name, the names and locations of associated databases and online <a href="#CHDJBEHF"><span class="xrefglossterm">undo tablespace</span></a>, the time stamp of the database creation, the current log sequence number, and checkpoint information.</p> </div> <!-- class="glossentry" --> <a id="i432215" name="i432215"></a> <div class="glossentry"><a id="CBABGGAC" name="CBABGGAC"></a> <p class="glossterm">default domain</p> <p>The network domain within which most client requests take place. It can be the domain where the client resides, or a domain from which the client often requests network services. The default domain is also the client configuration parameter that determines what domain to append to unqualified network name requests. A name request is unqualified if it does not have a "." character within it.</p> </div> <!-- class="glossentry" --> <a id="BGBBEIBA" name="BGBBEIBA"></a> <div class="glossentry"><a id="sthref891" name="sthref891"></a> <p class="glossterm">directory naming</p> <p>A <a href="#CHDEBFFE"><span class="xrefglossterm">naming method</span></a> that specifies a directory server to resolve a net service name into a connect descriptor. The net service name is stored centrally in a directory server.</p> </div> <!-- class="glossentry" --> <div class="glossentry"><a id="BGBJEBCC" name="BGBJEBCC"></a> <p class="glossterm">directory server</p> <p>A Lightweight Directory Access Protocol (LDAP)-compliant directory server. A directory can provide centralized storage and retrieval of database network components, user and corporate policies preferences, user authentication, and security information, replacing client-side and server-side localized files.</p> </div> <!-- class="glossentry" --> <div class="glossentry"><a id="sthref892" name="sthref892"></a> <p class="glossterm">external procedures</p> <p>Procedure or function written in the C programming language and stored in a shared library. An Oracle server can call external procedures or functions using PL/SQL routines. For Oracle Database to connect to external procedures, the server must be configured with a net service name and the <a href="#CBAEDCJH"><span class="xrefglossterm">listener</span></a> must be configured with protocol address and service information.</p> </div> <!-- class="glossentry" --> <a id="i432239" name="i432239"></a> <div class="glossentry"><a id="BABBFHBE" name="BABBFHBE"></a> <p class="glossterm">global database name</p> <p>The full database name that uniquely distinguishes it from any other database in your network domain.</p> <p>For example:</p> <p><code>sales.us.example.com</code></p> <p>where <code>sales</code> is the name you want to call your database and <code>us.example.com</code> is the network domain in which the database is located.</p> </div> <!-- class="glossentry" --> <a id="i432288" name="i432288"></a> <div class="glossentry"><a id="sthref893" name="sthref893"></a> <p class="glossterm">initialization parameter file</p> <p>An ASCII text file that contains information needed to initialize a database and <a href="#CHDDIFBA"><span class="xrefglossterm">instance</span></a>.</p> </div> <!-- class="glossentry" --> <a id="i432294" name="i432294"></a> <div class="glossentry"><a id="CHDDIFBA" name="CHDDIFBA"></a> <p class="glossterm">instance</p> <p>Process associated with a running Oracle Database instance. When a database is started on a database server (regardless of the type of computer), Oracle Database allocates a memory area called the <a href="#CHDHCDJC"><span class="xrefglossterm">System Global Area</span></a> and starts one or more Oracle Database processes. This combination of the System Global Area and Oracle Database processes is called an instance. The memory and processes of an instance manage the associated database's data efficiently and serve the users of the database.</p> </div> <!-- class="glossentry" --> <div class="glossentry"><a id="sthref894" name="sthref894"></a> <p class="glossterm">installation type</p> <p>A predefined component set that automatically selects which components to install. See <a href="intro.htm#i1005984">"Oracle Database Editions"</a> for a list of installation types available with each top-level component.</p> </div> <!-- class="glossentry" --> <div class="glossentry"><a id="sthref895" name="sthref895"></a> <p class="glossterm">Interprocess Communication (IPC)</p> <p>A protocol that client applications use that resides on the same node as the <a href="#CBAEDCJH"><span class="xrefglossterm">listener</span></a> to communicate with the database. IPC can provide a faster local connection than TCP/IP.</p> </div> <!-- class="glossentry" --> <a id="i432263" name="i432263"></a> <div class="glossentry"><a id="CBAEDCJH" name="CBAEDCJH"></a> <p class="glossterm">listener</p> <p>A process that resides on the server and whose responsibility is to listen for incoming client connection requests and manage the traffic to the server.</p> <p>When a client requests a network session with a database server, a listener receives the actual request. If the client information matches the listener information, then the listener grants a connection to the database server.</p> </div> <!-- class="glossentry" --> <a id="i432267" name="i432267"></a> <div class="glossentry"><a id="CHDHBEGI" name="CHDHBEGI"></a> <p class="glossterm">listener.ora file</p> <p>A configuration file for the listener that identifies the:</p> <ul> <li> <p>Listener name</p> </li> <li> <p>Protocol addresses on which it is accepting connection requests</p> </li> <li> <p>Services for which it is listening</p> </li> </ul> <p>The <code>listener.ora</code> file resides in the <code><span class="codeinlineitalic">ORACLE_HOME</span></code><code>\network\admin</code> directory.</p> <p>An Oracle Database 11<span class="italic">g</span> Release 2 (11.2) does not require identification of the database service because of service registration. However, static service configuration is required for an Oracle Database 11<span class="italic">g</span> Release 2 (11.2) if you plan to use Oracle Enterprise Manager.</p> </div> <!-- class="glossentry" --> <a id="i432281" name="i432281"></a> <div class="glossentry"><a id="CBAFHAAH" name="CBAFHAAH"></a> <p class="glossterm">local naming</p> <p>A <a href="#CHDEBFFE"><span class="xrefglossterm">naming method</span></a> that resolves a net service name into a connect descriptor. This name is configured and stored in the <a href="#CHDJFBGJ"><span class="xrefglossterm">tnsnames.ora file</span></a> on each individual client.</p> </div> <!-- class="glossentry" --> <a id="i432290" name="i432290"></a> <div class="glossentry"><a id="CHDEIFFI" name="CHDEIFFI"></a> <p class="glossterm">manual undo management mode</p> <p>A mode of the database in which undo blocks are stored in user-managed rollback segments.</p> </div> <!-- class="glossentry" --> <a id="i432299" name="i432299"></a> <div class="glossentry"><a id="CHDEBFFE" name="CHDEBFFE"></a> <p class="glossterm">naming method</p> <p>A resolution method used by a client application to resolve a connect identifier to a network address when attempting to connect to a database service. Oracle Net Services supports the following naming methods:</p> <ul> <li> <p>Local naming</p> </li> <li> <p>Directory naming</p> </li> <li> <p>Host naming</p> </li> <li> <p>External naming</p> </li> </ul> </div> <!-- class="glossentry" --> <a id="i432307" name="i432307"></a> <div class="glossentry"><a id="CBAEHHEF" name="CBAEHHEF"></a> <p class="glossterm">net service name</p> <p>A simple name for a service that resolves to a connect descriptor. Users initiate a connect request by passing a user name and password along with a net service name in a connect string for the service to which they want to connect:</p> <pre xml:space="preserve" class="oac_no_warn">SQL> CONNECT <span class="italic">user_name</span> Enter password: <span class="italic">password</span> SQL> @<span class="italic">net_service_name</span> </pre> <p>Depending on your needs, net service names can be stored in a variety of places, including:</p> <ul> <li> <p>Local configuration file, <code>tnsnames.ora</code>, on each client</p> </li> <li> <p>Directory server</p> </li> <li> <p>External naming service, such as Network Information Service (NIS) or Cell Directory Service (CDS)</p> </li> </ul> </div> <!-- class="glossentry" --> <a id="i432332" name="i432332"></a> <div class="glossentry"><a id="CBACHAGB" name="CBACHAGB"></a> <p class="glossterm">OPS$</p> <p>Acronym for operating system specific. The initialization file parameter <code>OS_AUTHENT_PREFIX</code> enables users to specify a prefix that Oracle uses to authenticate users attempting to connect to the database. Oracle concatenates the value of this parameter to the beginning of the user's operating system account name and password. When a connection request is attempted, Oracle compares the prefixed user name with Oracle user names in the database.</p> <p>The default value of this parameter is <code>""</code> (a null string), thereby eliminating the addition of any prefix to operating system account names. In earlier releases, <code>OPS$</code> was the default setting.</p> </div> <!-- class="glossentry" --> <a id="i432427" name="i432427"></a> <div class="glossentry"><a id="g998168" name="g998168"></a> <p class="glossterm"><code><span class="codeinlineboldital">ORACLE_BASE</span></code></p> <p><code><span class="codeinlineitalic">ORACLE_BASE</span></code> is the root of the Oracle Database directory tree. The Oracle Base directory is the top level directory that you can use to install the various oracle software products. You can use the same Oracle base directory for multiple installations. If you install an OFA-compliant database using Oracle Universal Installer defaults, then <code><span class="codeinlineitalic">ORACLE_BASE</span></code> is <code><span class="codeinlineitalic">X</span></code><code>:\oracle\product\11.2.0</code> where <code><span class="codeinlineitalic">X</span></code> is any hard drive (for example, <code>C:\oracle\product\11.2.0</code>).</p> </div> <!-- class="glossentry" --> <a id="i433461" name="i433461"></a> <div class="glossentry"><a id="CHDFFBBF" name="CHDFFBBF"></a> <p class="glossterm"><code><span class="codeinlineboldital">ORACLE_HOME</span></code></p> <p>Corresponds to the environment in which Oracle Database products run. This environment includes location of installed product files, <code>PATH</code> variable pointing to products' binary files, <a href="#CHDGBCJE"><span class="xrefglossterm">registry</span></a> entries, <a href="#CBAEHHEF"><span class="xrefglossterm">net service name</span></a>, and program groups.</p> <p>If you install an OFA-compliant database, using Oracle Universal Installer defaults, Oracle home (known as <code>\</code><code><span class="codeinlineitalic">ORACLE_HOME</span></code> in this guide) is located beneath <code><span class="codeinlineitalic">X</span></code><code>:\</code><code><span class="codeinlineitalic">ORACLE_BASE</span></code>. The default Oracle home is <code>db_</code><code><span class="codeinlineitalic">n</span></code> where <code><span class="codeinlineitalic">n</span></code> is the Oracle home number. It contains subdirectories for Oracle Database software executables and network files. See also <a href="#CHDHEAJI"><span class="xrefglossterm">Oracle home</span></a>.</p> </div> <!-- class="glossentry" --> <div class="glossentry"><a id="CHDHEAJI" name="CHDHEAJI"></a> <p class="glossterm">Oracle home</p> <p>The directory path to install Oracle components (for example, <code>C:\app\oracle\product\11.2.0\dbhome_</code><code><span class="codeinlineitalic">n</span></code>). You are prompted to enter an Oracle home in the <span class="bold">Path</span> field of the Specify File Locations window. See also <a href="#CHDFFBBF"><span class="xrefglossterm"><code><span class="codeinlineboldital">ORACLE_HOME</span></code></span></a>, <a href="#CHDBCDGC"><span class="xrefglossterm">Oracle home name</span></a>.</p> </div> <!-- class="glossentry" --> <div class="glossentry"><a id="CHDBCDGC" name="CHDBCDGC"></a> <p class="glossterm">Oracle home name</p> <p>The name of the current Oracle home, for example, <code>dbhome_1</code>. Each Oracle home has a home name that distinguishes it from all other Oracle homes on your computer. During installation, you are prompted to enter an Oracle home name in the <span class="bold">Name</span> field on the Specify File Locations window.</p> </div> <!-- class="glossentry" --> <div class="glossentry"><a id="sthref896" name="sthref896"></a> <p class="glossterm">Oracle schema</p> <p>A set of rules that determine what can be stored in an LDAP-compliant directory server. Oracle has its own schema that is applied to many types of Oracle entries, including Oracle Net Services entries. The Oracle schema for Oracle Net Services entries includes the attributes the entries may contain.</p> </div> <!-- class="glossentry" --> <div class="glossentry"><a id="sthref897" name="sthref897"></a> <p class="glossterm">Oracle Documentation Library</p> <p>The media in your kit that includes the Oracle Database documentation. The Oracle Documentation Library is separate from the installation media.</p> <p>The Oracle Documentation Library does not include this installation guide or <span class="italic">Oracle Database Release Notes for Microsoft Windows</span>. These documents are included on the media labeled Oracle Database 11<span class="italic">g</span> Release 2 (11.2) and are available on Oracle Technology Network (OTN).</p> </div> <!-- class="glossentry" --> <a id="i432837" name="i432837"></a> <div class="glossentry"><a id="BABFCEEI" name="BABFCEEI"></a> <p class="glossterm">Oracle Net foundation layer</p> <p>A networking communication layer that establishes and maintains the connection between the client application and server, as well as exchanging messages between them.</p> </div> <!-- class="glossentry" --> <div class="glossentry"><a id="sthref898" name="sthref898"></a> <p class="glossterm">protocol address</p> <p>An address that identifies the network address of a network object.</p> <p>When a connection is made, the client and the receiver of the request, such as the <a href="#CBAEDCJH"><span class="xrefglossterm">listener</span></a>, or Oracle Connection Manager, are configured with identical protocol addresses. The client uses this address to send the connection request to a particular network object location, and the recipient "listens" for requests on this address. It is important to install the same protocols for the client and the connection recipient, and to configure the same addresses.</p> </div> <!-- class="glossentry" --> <a id="i432460" name="i432460"></a> <div class="glossentry"><a id="sthref899" name="sthref899"></a> <p class="glossterm">raw partitions</p> <p>Portions of a physical disk that are accessed at the lowest possible disk (block) level.</p> </div> <!-- class="glossentry" --> <a id="CHDJAFAB" name="CHDJAFAB"></a> <div class="glossentry"><a id="sthref900" name="sthref900"></a> <p class="glossterm">redo log files</p> <p>Files that contain a record of all changes made to data in the database buffer cache. If an instance failure occurs, then an administrator can use the redo log files to recover the modified data that was in memory.</p> </div> <!-- class="glossentry" --> <a id="i432474" name="i432474"></a> <div class="glossentry"><a id="CHDGBCJE" name="CHDGBCJE"></a> <p class="glossterm">registry</p> <p>A Windows repository that stores configuration information for a computer.</p> </div> <!-- class="glossentry" --> <a id="i432403" name="i432403"></a> <div class="glossentry"><a id="sthref901" name="sthref901"></a> <p class="glossterm">repository</p> <p>A set of tables located in any Oracle database accessible to the Oracle Management Server. Oracle Management Server uses a repository to store all system data and application data, information about the state of managed nodes distributed throughout the environment, as well as information about the separately licensable management packs.</p> </div> <!-- class="glossentry" --> <div class="glossentry"><a id="sthref902" name="sthref902"></a> <p class="glossterm">service registration</p> <p>A feature by which the PMON process (an instance background process) automatically registers information with a <a href="#CBAEDCJH"><span class="xrefglossterm">listener</span></a>. Because this information is registered with the listener, the <a href="#CHDHBEGI"><span class="xrefglossterm">listener.ora file</span></a> does not need to be configured with this static information.</p> <p>Service registration provides the listener with the following information:</p> <ul> <li> <p>Service name(s) for each running instance of the database</p> </li> <li> <p>Instance name(s) of the database</p> </li> <li> <p>Service handlers (dispatchers and dedicated servers) available for each instance</p> <p>This allows the listener to direct a client's request appropriately.</p> </li> <li> <p>Dispatcher, instance, and node load information</p> <p>This allows the listener to determine which dispatcher can best handle a client connection's request. If all dispatchers are blocked, the listener can spawn a dedicated server for the connection.</p> </li> </ul> <p>This information allows the listener to determine how best to service a client connection request.</p> </div> <!-- class="glossentry" --> <a id="i432435" name="i432435"></a> <div class="glossentry"><a id="BABEBJAG" name="BABEBJAG"></a> <p class="glossterm">SID</p> <p>The Oracle system identifier that distinguishes the database from all other databases on your computer. The SID automatically defaults to the database name portion of the global database name (<code>sales</code> in the example <code>sales.us.example.com</code>) until you reach eight characters or enter a period. You can accept or change the default value.</p> <p>The SID can also see an Automatic Storage Management instance SID, available when you install <a href="#CHDDCAGE"><span class="xrefglossterm">Automatic Storage Management</span></a>.</p> </div> <!-- class="glossentry" --> <div class="glossentry"><a id="CHDFBJAI" name="CHDFBJAI"></a> <p class="glossterm">sqlnet.ora file</p> <p>A configuration file for the client or server that specifies the:</p> <ul> <li> <p>Client domain to append to unqualified service names or net service names</p> </li> <li> <p>Order of naming methods for the client to use when resolving a name</p> </li> <li> <p>Logging and tracing features to use</p> </li> <li> <p>Route of connections</p> </li> <li> <p>External naming parameters</p> </li> <li> <p>Oracle Advanced Security parameters</p> </li> </ul> <p>The <code>sqlnet.ora</code> file resides in <code><span class="codeinlineitalic">ORACLE_HOME</span></code><code>\network\admin</code>.</p> </div> <!-- class="glossentry" --> <div class="glossentry"><!-- infolevel="all" --><a id="CHDGIIIE" name="CHDGIIIE"></a> <p class="glossterm">Secure Sockets Layer (SSL)</p> <p>An industry standard protocol designed by Netscape Communications Corporation for securing network connections. SSL provides authentication, encryption, and data integrity using public key infrastructure (PKI).</p> </div> <!-- class="glossentry" --> <div class="glossentry"><!-- infolevel="all" --><a id="sthref903" name="sthref903"></a> <p class="glossterm">SSL</p> <p>See <a href="#CHDGIIIE"><span class="xrefglossterm">Secure Sockets Layer (SSL)</span></a>.</p> </div> <!-- class="glossentry" --> <a id="i432537" name="i432537"></a> <div class="glossentry"><a id="CHDHCDJC" name="CHDHCDJC"></a> <p class="glossterm">System Global Area</p> <p>A group of shared memory structures that contain data and control information for an Oracle Database <a href="#CHDDIFBA"><span class="xrefglossterm">instance</span></a>.</p> </div> <!-- class="glossentry" --> <div class="glossentry"><a id="sthref904" name="sthref904"></a> <p class="glossterm">system identifier</p> <p>See <a href="#BABEBJAG"><span class="xrefglossterm">SID</span></a>.</p> </div> <!-- class="glossentry" --> <a id="i432555" name="i432555"></a> <div class="glossentry"><a id="sthref905" name="sthref905"></a> <p class="glossterm">tablespace</p> <p>A logical storage unit within a database. Tablespaces are divided into logical units of storage called segments, which are further divided into extents.</p> </div> <!-- class="glossentry" --> <a id="i432454" name="i432454"></a> <div class="glossentry"><a id="CHDJFBGJ" name="CHDJFBGJ"></a> <p class="glossterm">tnsnames.ora file</p> <p>A configuration file that contains net service names mapped to connect descriptors. This file is used for the local naming method. The <code>tnsnames.ora</code> file resides in <code><span class="codeinlineitalic">ORACLE_HOME</span></code><code>\network\admin</code>.</p> </div> <!-- class="glossentry" --> <a id="i432471" name="i432471"></a> <div class="glossentry"><a id="CHDJBEHF" name="CHDJBEHF"></a> <p class="glossterm">undo tablespace</p> <p>An tablespace that contains one or more undo segments. The creation of any other types of segment (for example, tables, indexes) in undo tablespaces is not allowed.</p> <p>In the automatic mode, each Oracle instance is assigned one and only one undo tablespace. Each undo tablespace is composed of a set of undo files. Undo blocks are grouped in extents. At any point in time, an extent is either allocated to (and used by) a transaction table, or is free.</p> <p>Blocks in undo tablespaces are grouped into the following categories:</p> <ul> <li> <p>File control blocks, bitmap blocks, and so forth used for space management</p> </li> <li> <p>Undo segments containing transaction table blocks, undo blocks, and extent-map blocks used for transaction management</p> </li> <li> <p>Free blocks that are unallocated to file control or undo segments</p> </li> </ul> </div> <!-- class="glossentry" --> <div class="glossentry"><a id="sthref906" name="sthref906"></a> <p class="glossterm">unqualified name</p> <p>A net service name that does not contain a network domain.</p> </div> <!-- class="glossentry" --></div> <!-- class="ind" --> <div class="footer"> <hr /> <table class="simple oac_no_warn" summary="" cellspacing="0" cellpadding="0" width="100%"> <col width="33%" /> <col width="*" /> <col width="33%" /> <tr> <td align="left"> <table class="simple oac_no_warn" summary="" cellspacing="0" cellpadding="0" width="98"> <tr> <td align="center" valign="top"><a href="faq.htm"><img width="24" height="24" src="../../dcommon/gifs/leftnav.gif" alt="Go to previous page" /><br /> <span class="icon">Previous</span></a></td> <td align="center" valign="top"><a href="index.htm"><img width="24" height="24" src="../../dcommon/gifs/rightnav.gif" alt="Go to next page" /><br /> <span class="icon">Next</span></a></td> </tr> </table> </td> <td style="font-size: 90%" align="center" class="copyrightlogo"><img width="144" height="18" src="../../dcommon/gifs/oracle.gif" alt="Oracle" /><br /> Copyright © 1996, 2010, Oracle and/or its affiliates. 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