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<!--$Id: env_fileid_reset.so,v 1.3 2005/12/13 16:48:01 bostic Exp $--> <!--Copyright (c) 1997,2008 Oracle. All rights reserved.--> <!--See the file LICENSE for redistribution information.--> <html> <head> <title>Berkeley DB: DB_ENV->fileid_reset</title> <meta name="description" content="Berkeley DB: An embedded database programmatic toolkit."> <meta name="keywords" content="embedded,database,programmatic,toolkit,btree,hash,hashing,transaction,transactions,locking,logging,access method,access methods,Java,C,C++"> </head> <body bgcolor=white> <table width="100%"><tr valign=top> <td> <b>DB_ENV->fileid_reset</b> </td> <td align=right> <a href="../../db4-devel-4.7.25/api_c/api_core.html"><img src="../../db4-devel-4.7.25/images/api.gif" alt="API"></a> <a href="../../db4-devel-4.7.25/ref/toc.html"><img src="../../db4-devel-4.7.25/images/ref.gif" alt="Ref"></a></td> </tr></table> <hr size=1 noshade> <tt> <b><pre> #include <db.h> <p> int DB_ENV->fileid_reset(DB_ENV *dbenv, const char *file, u_int32_t flags); </pre></b> <hr size=1 noshade> <b>Description: DB_ENV->fileid_reset</b> <p>The DB_ENV->fileid_reset method allows database files to be copied, and then the copy used in the same database environment as the original.</p> <p>All databases contain an ID string used to identify the database in the database environment cache. If a physical database file is copied, and used in the same environment as another file with the same ID strings, corruption can occur. The DB_ENV->fileid_reset method creates new ID strings for all of the databases in the physical file.</p> <p>The DB_ENV->fileid_reset method modifies the physical file, in-place. Applications should not reset IDs in files that are currently in use.</p> <p>The DB_ENV->fileid_reset method may be called at any time during the life of the application.</p> <p>The DB_ENV->fileid_reset method returns a non-zero error value on failure and 0 on success. </p> <b>Parameters</b> <br> <b>file</b><ul compact><li>The name of the physical file in which new file IDs are to be created.</ul> <b>flags</b><ul compact><li>The <b>flags</b> parameter must be set to 0 or the following value: <br> <b>DB_ENCRYPT</b><ul compact><li>The file contains encrypted databases.</ul> <br></ul> <br> <br><b>Errors</b> <p>The DB_ENV->fileid_reset method may fail and return one of the following non-zero errors:</p> <br> <b>EINVAL</b><ul compact><li>An invalid flag value or parameter was specified.</ul> <br> <hr size=1 noshade> <br><b>Class</b> <a href="../../db4-devel-4.7.25/api_c/env_class.html">DB_ENV</a> <br><b>See Also</b> <a href="../../db4-devel-4.7.25/api_c/env_list.html">Database Environments and Related Methods</a> </tt> <table width="100%"><tr><td><br></td><td align=right> <a href="../../db4-devel-4.7.25/api_c/api_core.html"><img src="../../db4-devel-4.7.25/images/api.gif" alt="API"></a><a href="../../db4-devel-4.7.25/ref/toc.html"><img src="../../db4-devel-4.7.25/images/ref.gif" alt="Ref"></a> </td></tr></table> <p><font size=1>Copyright (c) 1996,2008 Oracle. All rights reserved.</font> </body> </html>
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