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<!-- Module User's Guide -->

<chapter>

	<title>User's Guide</title>

	<section>
	<title>Overview</title>
	<para>
		This is a module which provides Oracle connectivity for &kamailio;.
		It implements the DB API defined in &kamailio;. If you want to use
		the nathelper module, or any other modules that calls the
		get_all_ucontacts API export from usrloc, then you need to set
		the <emphasis>DORACLE_USRLOC</emphasis> define in the Makefile.defs
		file before compilation.
	</para>
	</section>

	<section>
	<title>Dependencies</title>
	<section>
		<title>&kamailio; Modules</title>
		<para>
		The following modules must be loaded before this module:
			<itemizedlist>
			<listitem>
			<para>
				<emphasis>No dependencies on other &kamailio; modules</emphasis>.
			</para>
			</listitem>
			</itemizedlist>
		</para>
	</section>
	<section>
		<title>External Libraries or Applications</title>
		<para>
		The following libraries or applications must be installed before running
		&kamailio; with this module loaded:
			<itemizedlist>
			<listitem>
			<para>
				<emphasis>instantclient-sdk-10.2.0.3</emphasis> - the development headers and libraries of OCI.
			</para>
			</listitem>
			</itemizedlist>
		</para>
	</section>
	</section>
	<section>
	<title>Parameters</title>
	<section>
		<title><varname>timeout</varname> (fixedpoint)</title>
		<para>
		Timeout value for any operation with BD.
		</para>
		<para>
		Possible values is from 0.1 to 10.0 seconds.
		</para>
		<para>
		<emphasis>
			Default value is 3.0 (3 second).
		</emphasis>
		</para>
		<para>
		If the value of timeout parameter is set to 0, the module uses synchronous
		mode (without timeout).
		</para>
		<example>
		<title>Set <varname>timeout</varname> parameter</title>
		<programlisting format="linespecific">
...
modparam("db_oracle", "timeout", 1.5)
...
</programlisting>
		</example>
		<example>
		<title>Disable asynchronous mode</title>
		<programlisting format="linespecific">
...
modparam("db_oracle", "timeout", 0)
...
</programlisting>
		</example>
	</section>
		<section>
		<title><varname>reconnect</varname> (fixedpoint)</title>
		<para>
		Timeout value for connect (create session) operation.
		</para>
		<para>
		Possible values is from 0.1 to 10.0 seconds.
		</para>
		<para>
		<emphasis>
			Default value is 0.2 (200 milliseconds).
		</emphasis>
		</para>
		<example>
		<title>Set <varname>reconnect</varname> parameter</title>
		<programlisting format="linespecific">
...
modparam("db_oracle", "reconnect", 0.5)
...
</programlisting>
		</example>
	</section>
	</section>
	<section>
	<title>Functions</title>
		<para>
		No function exported to be used from configuration file.
		</para>
	</section>
	<section>
	<title>Installation</title>
		<para>
		Because it depends on an external library, the oracle module is not
		compiled and installed by default. You can use one of the next options.
		</para>
		<itemizedlist>
			<listitem>
			<para>
			- edit the "Makefile" and remove "db_oracle" from "excluded_modules"
			list. Then follow the standard procedure to install &kamailio;:
			"make all; make install".
			</para>
			</listitem>
			<listitem>
			<para>
			- from command line use: 'make all include_modules="db_oracle";
			make install include_modules="db_oracle"'.
			</para>
			</listitem>
		</itemizedlist>
	</section>
	<section>
	<title>Utility kamailio_orasel</title>
		<para>
		For working with &ctltool; script, should be able to print the 'query'
		results to the terminal in a user-readable form. The standard command-line
		Oracle client (sqlplus) is not quite suitable for this, as it cannot align
		row width to real (received) data's (it always prints a cell width as
		described in the db scheme). This problem has been solved by inclusion the
		utility kamailio_oracle, which formats printing approximately in the same
		way as the 'mysql' client utility. In addition, this utility known about
		the "agreements and types" in DB that are used in &kamailio; for the work
		with Oracle and formats printing taking these into account.
		</para>
	</section>
</chapter>

