Impossible to extract the LONG typed values; always will return null.

I'm having a problem with ODP.net access to types of data LONG. I can't seem to find any way to access the data, it always comes back as an empty string - even when the same query is run in sqlplus or Developer SQL (from the installation of the client, hit the same user on the same target database) returns non-null results.

My specific task is to strengthen our source control, but I can't retrieve the SEARCH_CONDITION values of the... ._CONSTRAINTS views.

I reduced the tests to the following code:

Sun DB = "~ a connection string works ~ ';
OracleConnection conn = new OracleConnection (DB);
Conn. Open();
OracleCommand cmd = new OracleCommand ("select SEARCH_CONDITION from DBA_CONSTRAINTS where OWNER = 'SYS' and TABLE_NAME = ' UNDO$ ' and CONSTRAINT_TYPE ="C"", conn ");
OracleDataReader dr is cmd. ExecuteReader();

While (Dr. Read
{
String s1 = dr ["condition_de_recherche"]. ToString();
String s2 = Dr. GetValue (0). ToString();
String s3 = Dr. GetString (0). ToString();
OracleClob clob = Dr. GetOracleClob (0);
BLOB OracleBlob = Dr. GetOracleBlob (0);
}


None of the different types of data seem to help, all attempts at string returned as an empty string and attempts to clob/blob rise casting errors. It's probably worth noting that 'dr ["condition_de_recherche"] is DBNull' is set to false. It is not simply to retrieve a null and converted to an empty string.

Please don't forget that it's hitting the SYS user, I just assumed that more people have a database with a SYS user installed as our particular schema :). I'm running a 10.2.0.4 hit a 10.2.0.3 installation of the client server.

Any ideas? How can I get my check from the conditions of restraint via ODP.net?

Hello

Did you try to settle InitialLongFetchSize?

Greg

Tags: Database

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