1<!--$Id: env_set_verbose.so,v 10.56 2008/01/19 14:12:57 bostic Exp $--> 2<!--Copyright (c) 1997,2008 Oracle. All rights reserved.--> 3<!--See the file LICENSE for redistribution information.--> 4<html> 5<head> 6<title>Berkeley DB: DbEnv::set_verbose</title> 7<meta name="description" content="Berkeley DB: An embedded database programmatic toolkit."> 8<meta name="keywords" content="embedded,database,programmatic,toolkit,btree,hash,hashing,transaction,transactions,locking,logging,access method,access methods,Java,C,C++"> 9</head> 10<body bgcolor=white> 11<table width="100%"><tr valign=top> 12<td> 13<b>DbEnv::set_verbose</b> 14</td> 15<td align=right> 16<a href="../api_cxx/api_core.html"><img src="../images/api.gif" alt="API"></a> 17<a href="../ref/toc.html"><img src="../images/ref.gif" alt="Ref"></a></td> 18</tr></table> 19<hr size=1 noshade> 20<tt> 21<b><pre> 22#include <db_cxx.h> 23<p> 24int 25DbEnv::set_verbose(u_int32_t which, int onoff); 26<p> 27int 28DbEnv::get_verbose(u_int32_t which, int *onoffp); 29</pre></b> 30<hr size=1 noshade> 31<b>Description: DbEnv::set_verbose</b> 32<p>The DbEnv::set_verbose method turns specific additional informational 33and debugging messages in the Berkeley DB message output on and off. To see 34the additional messages, verbose messages must also be configured for 35the application. For more information on verbose messages, see the 36<a href="../api_cxx/env_set_msgfile.html">DbEnv::set_msgfile</a> method.</p> 37<p>The database environment's messages may also be configured using the 38environment's <a href="../ref/env/db_config.html#DB_CONFIG">DB_CONFIG</a> file. The syntax of the entry in that 39file is a single line with the string "set_verbose", one or more whitespace 40characters, and the method <b>which</b> parameter as a string; for example, 41"set_verbose DB_VERB_RECOVERY". 42Because the <a href="../ref/env/db_config.html#DB_CONFIG">DB_CONFIG</a> file is read when the database environment 43is opened, it will silently overrule configuration done before that 44time.</p> 45<p>The DbEnv::set_verbose method configures operations performed using the specified 46<a href="../api_cxx/env_class.html">DbEnv</a> handle, not all operations performed on the underlying 47database environment.</p> 48<p>The DbEnv::set_verbose method may be called at any time during the life of the 49application.</p> 50<p>The DbEnv::set_verbose method 51either returns a non-zero error value 52or throws an exception that encapsulates a non-zero error value on 53failure, and returns 0 on success. 54</p> 55<b>Parameters</b> <br> 56 <b>onoff</b><ul compact><li>If the <b>onoff</b> parameter is set to non-zero, the additional 57messages are output.</ul> 58 <b>which</b><ul compact><li>The <b>which</b> parameter must be set to one of the following values: 59<br> 60<b><a name="DB_VERB_DEADLOCK">DB_VERB_DEADLOCK</a></b><ul compact><li>Display additional information when doing deadlock detection.</ul> 61<b><a name="DB_VERB_FILEOPS">DB_VERB_FILEOPS</a></b><ul compact><li>Display additional information when performing filesystem operations 62such as open, close or rename. May not be available on all platforms.</ul> 63<b><a name="DB_VERB_FILEOPS_ALL">DB_VERB_FILEOPS_ALL</a></b><ul compact><li>Display additional information when performing all filesystem operations, 64including read and write. May not be available on all platforms.</ul> 65<b><a name="DB_VERB_RECOVERY">DB_VERB_RECOVERY</a></b><ul compact><li>Display additional information when performing recovery.</ul> 66<b><a name="DB_VERB_REGISTER">DB_VERB_REGISTER</a></b><ul compact><li>Display additional information concerning support for the 67<a href="../api_cxx/env_open.html#DB_REGISTER">DB_REGISTER</a> flag to the <a href="../api_cxx/env_open.html">DbEnv::open</a> method.</ul> 68<b><a name="DB_VERB_REPLICATION">DB_VERB_REPLICATION</a></b><ul compact><li>Display all detailed information about replication. This includes the 69information displayed by all of the other DB_VERB_REP_* and DB_VERB_REPMGR_* 70values.</ul> 71<b><a name="DB_VERB_REP_ELECT">DB_VERB_REP_ELECT</a></b><ul compact><li>Display detailed information about replication elections.</ul> 72<b><a name="DB_VERB_REP_LEASE">DB_VERB_REP_LEASE</a></b><ul compact><li>Display detailed information about replication master leases.</ul> 73<b><a name="DB_VERB_REP_MISC">DB_VERB_REP_MISC</a></b><ul compact><li>Display detailed information about general replication processing not 74covered by the other DB_VERB_REP_* values.</ul> 75<b><a name="DB_VERB_REP_MSGS">DB_VERB_REP_MSGS</a></b><ul compact><li>Display detailed information about replication message processing.</ul> 76<b><a name="DB_VERB_REP_SYNC">DB_VERB_REP_SYNC</a></b><ul compact><li>Display detailed information about replication client synchronization.</ul> 77<b><a name="DB_VERB_REPMGR_CONNFAIL">DB_VERB_REPMGR_CONNFAIL</a></b><ul compact><li>Display detailed information about Replication Manager connection failures.</ul> 78<b><a name="DB_VERB_REPMGR_MISC">DB_VERB_REPMGR_MISC</a></b><ul compact><li>Display detailed information about general Replication Manager processing.</ul> 79<b><a name="DB_VERB_WAITSFOR">DB_VERB_WAITSFOR</a></b><ul compact><li>Display the waits-for table when doing deadlock detection.</ul> 80<br></ul> 81<br> 82<br><b>Errors</b> 83<p>The DbEnv::set_verbose method 84may fail and throw 85<a href="../api_cxx/except_class.html">DbException</a>, 86encapsulating one of the following non-zero errors, or return one of 87the following non-zero errors:</p> 88<br> 89<b>EINVAL</b><ul compact><li>An 90invalid flag value or parameter was specified.</ul> 91<br> 92<hr size=1 noshade> 93<b>Description: <a href="../api_cxx/env_set_verbose.html">DbEnv::get_verbose</a></b> 94<p>The <a href="../api_cxx/env_set_verbose.html">DbEnv::get_verbose</a> method returns whether the specified <b>which</b> 95parameter is currently set or not.</p> 96<p>The <a href="../api_cxx/env_set_verbose.html">DbEnv::get_verbose</a> method may be called at any time during the life of the 97application.</p> 98<p>The <a href="../api_cxx/env_set_verbose.html">DbEnv::get_verbose</a> method 99either returns a non-zero error value 100or throws an exception that encapsulates a non-zero error value on 101failure, and returns 0 on success. 102</p> 103<b>Parameters</b> <br> 104 <b>which</b><ul compact><li>The <b>which</b> parameter is the message value for which configuration 105is being checked.</ul> 106 <b>onoffp</b><ul compact><li>The <b>onoffp</b> parameter references memory into which 107 the configuration of the specified <b>which</b> parameter is copied.</ul> If the returned <b>onoff</b> value is zero, the parameter is off; 108otherwise on. 109<br> 110<hr size=1 noshade> 111<br><b>Class</b> 112<a href="../api_cxx/env_class.html">DbEnv</a> 113<br><b>See Also</b> 114<a href="../api_cxx/env_list.html">Database Environments and Related Methods</a> 115</tt> 116<table width="100%"><tr><td><br></td><td align=right> 117<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> 118</td></tr></table> 119<p><font size=1>Copyright (c) 1996,2008 Oracle. 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