如何为oracle c＃创建连接字符串

Question

i am creating connection string for oracle in c#

below is my code

 OracleConnection cn = new OracleConnection("Data Source=(DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=TCP)(HOST=192.168.0.5 )(PORT=1521)))(CONNECT_DATA=(SERVER=DEDICATED)(SERVICE_NAME=ORCL)));User Id=nTireoffice ;Password=nTireoffice;");
        DataTable dt = new DataTable();
        string strSql = " select to_number (nvl(max(nvl(Region_ID ,0)),0)+1 ) as No from BO_REGION_MASTER ;";

        cn.Open();

        OracleDataAdapter objSda = new OracleDataAdapter(strSql, cn);

        objSda.Fill(dt);
        string s = dt.Rows[0][0].ToString();

its throwing exception ORA-06413: Connection not open.

i am using windows 8 enterprises 64 bit os

thank u...

Answer 1

Have a look here . (This is a very useful site for clues about most ORA errors.)

It sounds like it could be the folder your executable is in, or the actual name of your executable.

PS It would be useful if you could tell us the actual line the error occurs on.

Answer 2

I've created the connection like this.

ora_cmd = new OracleCommand();
ora_con = new OracleConnection("Data Source={YOUR_HOST}:{YOUR_PORT}/{YOUR_DB};Persist Security Info=True;User ID={YOUR_ID};Password={YOUR_PASSWORD};Pooling=True;Max Pool Size=200;");
ora_cmd.Connection = ora_con;
ora_connect.Open();

Then use the ora_cmd to executes statements