* 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 and Linux</li>
+
<li>Works with Oracle 8i</li>
+
+ <li>Untested, but should work with Oracle 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>Does not support trusted connections</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
assembly and the oci library). In Current Mono cvs, System.Data.OracleClient
directly platform invokes into the oci library thanks to Tim Coleman.</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.</li>
- <li>Can NOT retrieve data yet. ExecuteReader() and ExecuteScalar() in OracleCommand
- and OracleDataReader need to be implemented.</li>
+ <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. The
+ Data Adapter is abstract enough that it should work as expected.</li>
<li>Lots of missing functionality and bugs.</li>
- <li>Error handling has been started.</li>
+ <li>Works with SQL# command-line and GTK# versions in cvs. Only works with
+ simple character data though. SQL# For GTK# can only show the results to
+ the TextView because the Data Adapter is not yet available</li>
</ul>
** Action Plan
<ul>
- <li>Be able to retrieve results via a data reader</li>
- <li>Parameters support</li>
- <li>transactions</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 8i and 9i</li>
+ <li>Be able to fill a DataTable in a DataSet via a data adapter (IN PROGRESS)</li>
+ <li>Support for Oracle 8i and 9i (UNKNOWN)</li>
<li>Support LOBs</li>
<li>Support all the data types</li>
<li>Implement Connection pooling</li>
<li>Have access to an Oracle 8i 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 Oracle Technology Network is free. If installing on Linux,
+ 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 System.Data.OracleClient.dll assembly is built, if not, go
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)";
+ dbcon = new OracleConnection (connectionString);
+ dbcon.Open ();
+ IDbCommand dbcmd = dbcon.CreateCommand ();
+ string sql = "SELECT ename, job FROM scott.emp";
+ dbcmd.CommandText = sql;
+ IDataReader reader = dbcmd.ExecuteReader ();
+ while (reader.Read ()) {
+ string employeeName = reader["ename"];
+ string job = 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.ExecuteNonQuery ();
+ dbcmd.Dispose ();
dbcmd = null;
- dbcon.Close();
+ dbcon.Close ();
dbcon = null;
}
}
projects / mono.git / blobdiff