* Oracle Data Provider
<ul>
+
+ <li>ADO.NET Data Provider for <a href="http://www.oracle.com/">Oracle</a> databases</li>
+
<li>Exists in namespace System.Data.OracleClient and assembly System.Data.OracleClient</li>
- <li>Works on Windows</li>
-
- <li>Works with Oracle 8i</li>
-
- <li>More information about Oracle can be found at <a href="http://www.oracle.com/"/>here</a></li>
-
- <li>Created by Daniel Morgan.</li>
-
- <li>Does not support trusted connections</li>
+ <li>Works on Windows and Linux</li>
+
+ <li>Works with Oracle 8i and 9i.</li>
+
+ <li>Uses the Oracle CLI (Call Level Interface) which is a C library (API) for the Oracle Client
+ software</li>
+
+ <li>Internally, the OracleClient provider has OCI abstracted to an object-oriented programming model</li>
+
+ <li>Created by Daniel Morgan and Tim Coleman</li>
+ <li>Bugs with Mono or the data provider should be reported
+ in Mono's Bugzilla <a href="http://bugzilla.ximian.com/">here</a>. If you
+ do not have Bugzilla user account, it is free
+ and easy to
+ create one <a href="http://bugzilla.ximian.com/createaccount.cgi">here</a>.</li>
+
</ul>
** Current Status
<ul>
- <li>OracleConnection can connect to an Oracle 8i database on
- Windows via oci.dll</li>
+ <li>OracleConnection can connect and disconnect to an Oracle 8i or 9i database on
+ Windows and Linux via OCI (Oracle Call-level Interface)</li>
- <li>The native glue library only has makefiles for Borland C++ and
- Microsoft Visual C++ command line compilers. Only the makefile for
- Microsoft Visual C++ command-line compiler has been tested.</li>
+ <li>Can have multiple connections with different transactions where each transaction is
+ separated from the others, so a rollback or commit in one transaction
+ does not affect the other.</li>
<li>Can execute simple DML SQL statements, such as,
INSERT a row into the EMP table via the OracleCommand's ExecuteNonQuery method</li>
- <li>The System.Data.OracleClient.dll assembly can be built with mcs/mono via
- the makefile.gnu for System.Data.OracleClient or csc/.net via the
- System.Data.OracleClient.build nant build file. There is also a Visual Studio.NET
- solution it too.
+ <li>Can retrieve data via ExecuteReader and OracleDataReader. Currently,
+ supports character, numeric, some date data types. ExecuteScalar
+ also works.</li>
+
+ <li>Simple input parameters (character and numeric data) can now
+ be used in SQL queries. Output parameters do not yet work.</li>
+
+ <li>OracleException and Error handling exists now.</li>
+
+ <li>Message handling needs to be added for non-critical messages
+ received from Oracle</li>
+
+ <li>Handling of various data types need to be added.</li>
+
+ <li>Data Adapter exists, and a DataSet can be filled using it.</li>
+
+ <li>Lots of missing functionality and bugs.</li>
+
+ <li>Works with SQL# command-line and GTK# GUI versions.</li>
</ul>
** Action Plan
<ul>
- <li>Get the makefile for the Borland C++ compiler to work
- since the <a href="http://www.borland.com/">Borland</a> C++ compiler is
- a free download</li>
- <li>Get the native glue lib System.Data.OracleClient.ocigule.dll to be built
- using gcc on Linux. This would require that Oracle 8i client software be installed
- on Linux with the oci headers and shared libraries</li>
- <li>Be able to retrieve results via a data reader</li>
- <li>Parameters support</li>
+ <li>Be able to retrieve results via a data reader (WORKING)</li>
+ <li>Parameters support (IN PROGRESS)</li>
+ <li>transactions (WORKING)</li>
<li>Stored Procedures, Functions, and Packages support</li>
- <li>Be able to fill a DataTable in a DataSet via a data adapter</li>
- <li>Support for Oracle 9i</li>
- <li>Figure out how to move the unmanaged OCI handling code in
- the oci glue C library to the managed C# assembly. I have been unable
- to successfully connect to an Oracle 8i database by using Platform Invoke and
- Marshalling in C# to the oci shared library (oci.dll on Windows)</li>
+ <li>Be able to fill a DataTable in a DataSet via a data adapter (IN PROGRESS)</li>
+ <li>Support for Oracle 8i on Linux and Windows (WORKING)</li>
+ <li>Support for Oracle 9i on Linux and Windows (WORKING)</li>
+ <li>Support for Oracle 10g on Linux and Windows [TODO]. Please let us
+ know on mono-list if Mono OracleClient works with Oracle 10g or not. If not, what errors do you get</li>
+ <li>Support Large OBjects</li>
+ <li>Support all the data types</li>
+ <li>Implement Connection pooling</li>
+ <li>Security</li>
</ul>
-** Testing Mono.Data.OracleClient
+** Testing System.Data.OracleClient
<ul>
<li>Have a working mono and mcs</li>
- <li>Have access to an Oracle 8i database or download it from
- <a href="http://www.oracle.com/">Oracle</a>. Registration to the
- Oracle Technology Network is free. If installing on Linux, I suggest you
- do a lot of searching to see how others installed Oracle on Linux.</li>
+ <li>Have access to an Oracle 8i or 9i database or download it from
+ <a href="http://www.oracle.com/">Oracle</a>. If you are connecting
+ remotely to an Oracle database, you need the Oracle client software.
+ Registration to the <a href="http://technet.oracle.com/">Oracle Technology Network</a> is free. If installing on Linux,
+ I suggest you do a lot of searching to see how others installed Oracle on Linux.</li>
- <li>Make sure Mono.Data.OracleClient.dll assembly is built, if not, go
- into Mono.Data.OracleClient and do a make -f makefile.gnu (on Linux) or
- ../../nant/NAnt.exe (on Cygwin).</li>
-
- <li>The OCI Glue Library Mono.Data.OracleClient.ociglue.dll will need to be
- created as well. Has only been tested with lc (Microsoft Visual C++ command-line compiler).
- There is a make file for Microsoft C++ and Borland C++. I'm sure it wouldn't be hard
- to create a makefile for gcc if installing on Linux.</li>
+ <li>Make sure System.Data.OracleClient.dll assembly is built.</li>
<li>Take a look at TestOracleClient.cs found at mcs/class/System.Data.OracleClient/Test</li>
+ <li>The Data Source is an Oracle TNSNAME</li>
+
<li>Has a connection string format:
<pre>
"Data Source=tnsname;User ID=userid;Password=password"
public class Test
{
- public static void Main(string[] args)
+ public static void Main (string[] args)
{
string connectionString =
"Data Source=testdb;" +
"User ID=scott;" +
"Password=tiger;";
- IDbConnection dbcon;
- dbcon = new OracleConnection(connectionString);
- IDbCommand dbcmd = dbcon.CreateCommand();
- string sql =
- "insert into scott.emp " +
- "(empno, ename, job, sal, deptno) " +
- "values(123," +
- "'Don Smith'," +
- "'Cook'," +
- "23021," +
- "20)";
- dbcmd.ConnectionString = sql;
- dbcmd.ExecuteNonQuery();
- dbcmd.Dispose();
+ OracleConnection dbcon = null;
+ dbcon = new OracleConnection (connectionString);
+ dbcon.Open ();
+ OracleCommand dbcmd = dbcon.CreateCommand ();
+ string sql = "SELECT ename, job FROM scott.emp";
+ dbcmd.CommandText = sql;
+ OracleDataReader reader = dbcmd.ExecuteReader ();
+ while (reader.Read ()) {
+ string employeeName = (string) reader["ename"];
+ string job = (string) reader["job"];
+ Console.WriteLine ("Employee Name: {0} Job: {1}",
+ employeeName, job);
+ }
+ // clean up
+ reader.Close ();
+ reader = null;
+ dbcmd.CommandText = sql;
+ dbcmd.ExecuteNonQuery ();
+ dbcmd.Dispose ();
dbcmd = null;
- dbcon.Close();
+ dbcon.Close ();
dbcon = null;
}
}
-r System.Data.OracleClient.dll
</pre>
</li>
- <li>Build on Windows via Cygwin:
+ <li>Build on Windows:
<pre>
- mono C:/cygwin/home/MyHome/mono/install/bin/mcs.exe \
- TestExample.cs \
- -lib:C:/cygwin/home/MyHome/mono/install/lib \
- -r System.Data.dll -r System.Data.OracleClient.dll
+ mcs TestExample.cs /r:System.Data.dll \
+ /r:System.Data.OracleClient.dll
</pre>
</li>
</ul>
projects / mono.git / blobdiff