2 Installation and Configuration

This chapter describes the installation of Oracle Database Extensions for .NET, system requirements, and file locations.

This chapter contains these topics:

System Requirements
Requirements for .NET Stored Procedures and Functions
File Locations after Installation
Installation and First Use
Configuring Extproc Agent Using Windows Service

System Requirements

Oracle Database Extensions for .NET requires the following:

Microsoft .NET Framework 1.0 or later.
Microsoft Windows 2003, Windows 2000, or Windows XP.
Oracle Database 10g Release 2 (10.2) or later.
Oracle Client release 10g Release 2 (10.2) or later is required for .NET stored procedure development and deployment.
Oracle Developer Tools for Visual Studio .NET.

Oracle Developer Tools for Visual Studio .NET is not released with Oracle Database 10g Release 2 (10.2). It can be obtained from the Oracle .NET Developer Center at OTN.

Requirements for .NET Stored Procedures and Functions

A .NET stored procedure or function must meet the following requirements:

Be declared a public static method.
Not be a constructor or a destructor.
Use parameter types that are compatible with the Oracle native database types.

File Locations after Installation

OraClr10.dll is installed in the ORACLE_BASE\ORACLE_HOME\bin directory.The readme.txt file is installed in the ORACLE_BASE\ORACLE_HOME\ODE directory.

.NET assemblies deployed by developers are copied into the ORACLE_BASE\ORACLE_HOME\bin\CLR directory (or its subdirectory) by the Oracle Deployment Wizard for .NET.

Installation and First Use

Oracle Database Extensions for .NET is installed as part of a custom Oracle Database installation using the Oracle Universal Installer. From the Oracle Universal Installer Welcome screen, you must chose Advanced Installation, then from the Select Installation Type screen, choose Custom. When the Available Product Components list is displayed, go to Enterprise Edition Options, and select Oracle Database Extensions for .NET.

Oracle Database Extensions for .NET is configured using the Database Configuration Assistant.

Configuring Extproc Agent Using Windows Service

As part of Oracle Database Extensions for .NET installation, a Windows service is installed. The service is called OraClrAgnt and can be accessed through the Service Control Panel, as OracleOracleHomeNameClrAgnt, where OracleHomeName represents your Oracle home.

This service is used for the startup, configuration, and shutdown of the extproc agent.

The parameters which can be configured using this service are listed in Table 2-1, "OraClrAgnt Service Parameters".

These parameter values can be specified as part of the Start Parameters in the properties window of the Control Panel Service. In this case, the parameter values are not saved and the values must be supplied again if the service is restarted later.

To persist the parameter values, you can change the service registry entry and provide the parameter values as command line parameters to OraClrAgnt.exe, for example:

ORACLE_BASE\ORACLE_HOME\bin\oraclragnt.exe agent_sid=CLRExtProc max_task_threads=5

This sets the number of maximum task threads to 5 while other optional parameters like max_dispatchers, tcp_dispatchers and max_sessions are set to their default values.

If the service cannot be started or stopped, the error messages are logged in the Application Log of the Event Viewer, with the service name as the event source name.

OraClrAgnt Service Parameters

Table 2-1 lists the parameters which can be configured using this service.

Table 2-1 OraClrAgnt Service Parameters

Parameters	Descriptions
`agent_sid`	This represents the `SID` of the `extproc` process with a default value of `CLRExtProc`. This is a mandatory parameter. If this parameter value is changed, appropriate changes need to be made in `tnsnames.ora` and `listener.ora` files.
`listener_address`	Address on which the listener is listening. This is an optional parameter. If it is not specified, then this is set to the default value.
`max_dispatchers`	Number of maximum dispatchers in the `extproc` process. This is an optional parameter. If it is not specified, then this number is set to a default value.
`max_sessions`	Number of maximum sessions in the `extproc` process. This is an optional parameter. If it is not specified, then this number is set to a default value.
`max_task_threads`	Number of maximum task threads in the `extproc` process. This is an optional parameter. If it is not specified, then this number is set to a default value.
`shutdown_address`	Address on which the agent should listen for shutdown messages from `agtctl`. This is an optional parameter. If it is not specified, then this is set to the default value.
`tcp_dispatchers`	Number of TCP dispatchers in the `extproc` process. This is an optional parameter. If it is not specified, then this number is set to a default value.

Note:

By default, this service is created and run in the Local System Account; however, it can be changed to work with a logged-on user account through the service control panel.