This question is about ADO.NET 2.0.  I'm using
System.Data.OracleClient to connect to an Oracle 9i Database. I'm
executing a script and the following statement gives me an ORA-12828
error :
CREATE BITMAP INDEX IQLBIIX_IQDU_FLAG_CL0 ON "IQDU_FLAG" (
"LOYALTY_AMOUNT_REFUND_FLAG" ) TABLESPACE IQTBS_55_DI_INDEXES PCTFREE
0 MAXTRANS 255  STORAGE ( INITIAL 16K NEXT 10M MINEXTENTS 1 MAXEXTENTS
2147483645   PCTINCREASE 0)  PARALLEL ( DEGREE 4 )  NOLOGGING

A collegue of mine uses System.Data.ODBC to connect to that Oracle
database and he adds an MTS=F attribute to the connection string and
everything works fine.  I do not want to use ODBC and I want it to
work using OracleClient and I want it to make it work by code.  I have
been looking for an equivalent of MTS=f for the OracleClient
connection string but I have not found anything like that.

Thanks

you can see in 

http://www.connectionstrings.com/

Answer = 
This is because System.Data.OracleClient does not support parallel
transactions. Try removing the PARALLEL ( DEGREE 4 ) part from the
query and try again - it should work.

I am not a google researcher, so unfortunately I won't get paid for
answering this, but would like to know if it solves your problem.