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diff --git a/db/docs/api_cxx/env_set_tx_max.html b/db/docs/api_cxx/env_set_tx_max.html new file mode 100644 index 000000000..918952894 --- /dev/null +++ b/db/docs/api_cxx/env_set_tx_max.html @@ -0,0 +1,70 @@ +<!--$Id: env_set_tx_max.so,v 10.21 2000/05/20 16:29:12 bostic Exp $--> +<!--Copyright 1997, 1998, 1999, 2000 by Sleepycat Software, Inc.--> +<!--All rights reserved.--> +<html> +<head> +<title>Berkeley DB: DbEnv::set_tx_max</title> +<meta name="description" content="Berkeley DB: An embedded database programmatic toolkit."> +<meta name="keywords" content="embedded,database,programmatic,toolkit,b+tree,btree,hash,hashing,transaction,transactions,locking,logging,access method,access methods,java,C,C++"> +</head> +<body bgcolor=white> + <a name="2"><!--meow--></a> +<table><tr valign=top> +<td> +<h1>DbEnv::set_tx_max</h1> +</td> +<td width="1%"> +<a href="../api_cxx/cxx_index.html"><img src="../images/api.gif" alt="API"></a><a href="../ref/toc.html"><img src="../images/ref.gif" alt="Ref"></a> +</td></tr></table> +<hr size=1 noshade> +<tt> +<h3><pre> +#include <db_cxx.h> +<p> +int +DbEnv::set_tx_max(u_int32_t tx_max); +</pre></h3> +<h1>Description</h1> +<p>Set the maximum number of active transactions that are supported by the +environment. This value bounds the size of backing shared memory regions. +Note that child transactions must be counted as active until their +ultimate parent commits or aborts. +<p>When there are more than the specified number of concurrent transactions, +calls to <a href="../api_cxx/txn_begin.html">DbEnv::txn_begin</a> will fail (until some active transactions +complete). If no value is specified, a default value of 20 is used. +<p>The DbEnv::set_tx_max interface may only be used to configure Berkeley DB before +the <a href="../api_cxx/env_open.html">DbEnv::open</a> interface is called. +<p>The DbEnv::set_tx_max method either returns a non-zero error value or throws an exception that +encapsulates a non-zero error value on failure, and returns 0 on success. +<p>The database environment's maximum number of active transactions may also be set using the environment's +<b>DB_CONFIG</b> file. The syntax of the entry in that file is a +single line with the string "set_tx_max", one or more whitespace characters, +and the number of transactions. Because the <b>DB_CONFIG</b> file is read when the database +environment is opened, it will silently overrule configuration done +before that time. +<h1>Errors</h1> +<p><dl compact> +<p><dt>EINVAL<dd>An invalid flag value or parameter was specified. +<p>Called after <a href="../api_cxx/env_open.html">DbEnv::open</a> was called. +</dl> +<h3>Classes</h3> +<a href="../api_cxx/dbenv_class.html">DbEnv</a>, <a href="../api_cxx/txn_class.html">DbTxn</a> +<h1>See Also</h1> +<a href="../api_cxx/env_set_tx_max.html">DbEnv::set_tx_max</a>, +<a href="../api_cxx/env_set_tx_recover.html">DbEnv::set_tx_recover</a>, +<a href="../api_cxx/env_set_tx_timestamp.html">DbEnv::set_tx_timestamp</a>, +<a href="../api_cxx/txn_abort.html">DbTxn::abort</a>, +<a href="../api_cxx/txn_begin.html">DbEnv::txn_begin</a>, +<a href="../api_cxx/txn_checkpoint.html">DbEnv::txn_checkpoint</a>, +<a href="../api_cxx/txn_commit.html">DbTxn::commit</a>, +<a href="../api_cxx/txn_id.html">DbTxn::id</a>, +<a href="../api_cxx/txn_prepare.html">DbTxn::prepare</a> +and +<a href="../api_cxx/txn_stat.html">DbEnv::txn_stat</a>. +</tt> +<table><tr><td><br></td><td width="1%"> +<a href="../api_cxx/cxx_index.html"><img src="../images/api.gif" alt="API"></a><a href="../ref/toc.html"><img src="../images/ref.gif" alt="Ref"></a> +</td></tr></table> +<p><font size=1><a href="http://www.sleepycat.com">Copyright Sleepycat Software</a></font> +</body> +</html> |