83 lines
3.7 KiB
HTML
83 lines
3.7 KiB
HTML
<!--$Id: rep_priority.html 63573 2008-05-23 21:43:21Z trent.nelson $-->
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<!--Copyright (c) 1997,2008 Oracle. All rights reserved.-->
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<html>
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<head>
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<title>Berkeley DB: DbEnv::rep_set_priority</title>
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<meta name="description" content="Berkeley DB: An embedded database programmatic toolkit.">
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<meta name="keywords" content="embedded,database,programmatic,toolkit,btree,hash,hashing,transaction,transactions,locking,logging,access method,access methods,Java,C,C++">
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</head>
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<body bgcolor=white>
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<table width="100%"><tr valign=top>
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<td>
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<b>DbEnv::rep_set_priority</b>
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</td>
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<td align=right>
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<a href="../api_cxx/api_core.html"><img src="../images/api.gif" alt="API"></a>
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<a href="../ref/toc.html"><img src="../images/ref.gif" alt="Ref"></a></td>
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</tr></table>
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<hr size=1 noshade>
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<tt>
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<b><pre>
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#include <db_cxx.h>
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<p>
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int
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DbEnv::rep_set_priority(u_int32_t priority);
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int
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DbEnv::rep_get_priority(u_int32_t *priorityp);
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</pre></b>
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<hr size=1 noshade>
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<b>Description: DbEnv::rep_set_priority</b>
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<p>The DbEnv::rep_set_priority method specifies the database environment's
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priority in replication group elections. A special value of
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0 indicates that this environment cannot be a replication
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group master.</p>
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<p>The database environment's replication subsystem may also be configured using the
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environment's <a href="../ref/env/db_config.html#DB_CONFIG">DB_CONFIG</a> file. The syntax of the entry in that
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file is a single line with the string "rep_set_priority", one or more whitespace
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characters, and the priority of this site.
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For example, "rep_set_priority 1" sets the priority of this site to 1.
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Because the <a href="../ref/env/db_config.html#DB_CONFIG">DB_CONFIG</a> file is read when the database environment
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is opened, it will silently overrule configuration done before that
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time.</p>
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<p>The DbEnv::rep_set_priority method configures a database environment, not only operations
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performed using the specified <a href="../api_cxx/env_class.html">DbEnv</a> handle.</p>
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<p>The DbEnv::rep_set_priority method may be called at any time during the life of the
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application.</p>
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<p>The DbEnv::rep_set_priority method
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either returns a non-zero error value
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or throws an exception that encapsulates a non-zero error value on
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failure, and returns 0 on success.
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</p>
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<b>Parameters</b> <br>
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<b>priority</b><ul compact><li>The priority of this database environment in the replication group. The
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priority must be a non-zero integer, or 0 if this environment cannot be
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a replication group master. (See <a href="../ref/rep/pri.html">Replication environment priorities</a> for more information).</ul>
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<br>
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<hr size=1 noshade>
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<b>Description: DbEnv::rep_get_priority</b>
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<p>The DbEnv::rep_get_priority method returns the database environment priority.</p>
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<p>The DbEnv::rep_get_priority method may be called at any time during the life of the
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application.</p>
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<p>The DbEnv::rep_get_priority method
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either returns a non-zero error value
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or throws an exception that encapsulates a non-zero error value on
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failure, and returns 0 on success.
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</p>
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<b>Parameters</b> <br>
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<b>priorityp</b><ul compact><li>The DbEnv::rep_get_priority method returns the
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database environment priority in <b>priorityp</b>.</ul>
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<br>
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<hr size=1 noshade>
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<br><b>Class</b>
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<a href="../api_cxx/env_class.html">DbEnv</a>
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<br><b>See Also</b>
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<a href="../api_cxx/rep_list.html">Replication and Related Methods</a>
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</tt>
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<table width="100%"><tr><td><br></td><td align=right>
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<a href="../api_cxx/api_core.html"><img src="../images/api.gif" alt="API"></a><a href="../ref/toc.html"><img src="../images/ref.gif" alt="Ref"></a>
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</td></tr></table>
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<p><font size=1>Copyright (c) 1996,2008 Oracle. All rights reserved.</font>
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</html>
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