Fetching whole table using OCI calls

Question

I am new to OCI programming .I am writing an appliaction in C# to fetch data from ORACLE using OCI calls,Using that application i can able to fecth single row,
but i need to load/ fetch the entire table data from the database using the single fetch?
I have created a scrollable resultset by using the below give statement
and i can able to fetch single coloumn.
short paramSizee = 20;
IntPtr TestNo = GetPointer((int)paramSizee);
rc = OCI.OCIDefineByPos(hStatement, out HDefine, hError, 1, TestNo, paramSizee, OCI.DATATYPE.VARCHAR2, OCI.NullHandleRef, OCI.NullHandleRef, OCI.NullHandleRef, OCI.MODE.OCI_DEFAULT);
if (rc != 0)
Console.WriteLine(CheckError(hError));
throw new Exception("OCI Define Failed...");
rc = OCI.OCIStmtExecute(hServiceContext, hStatement, hError, iters, 0, OCI.NullHandleRef, OCI.NullHandleRef, OCI.MODE.OCI_STMT_SCROLLABLE_READONLY);
rc = OCI.OCIStmtFetch(hStatement, hError,50, OCI.FETCH.OCI_FETCH_NEXT, OCI.MODE.OCI_DEFAULT);
if (rc != 0)
Console.WriteLine(CheckError(hError));
throw new Exception("OCI Fetch Failed...");
Using above calls i can able to fetch arround 100 rows per fetch but my customer table has 16000 rows .
So it will be great if someone suggest proper way to fetch entire table data in single fetch.
Thanks,
Raj

Answer 1

For fetching large number of rows in single Db roundtrip use the following
To get the bulk Data use the following.MAX_PREFETCH_ROWS is the integer value you want fetch in BULK
(void) OCIAttrSet((dvoid *)DBctx->stmthp, (ub4) OCI_HTYPE_STMT,
(dvoid *)&MAX_PREFETCH_ROWS,(ub4)sizeof(MAX_PREFETCH_ROWS),
(ub4) OCI_ATTR_PREFETCH_ROWS, DBctx->errhp);