I have a strange behavior with an ODBC Driver and the underlying COBOL database. The database driver is acuODBC of AcuCorp(now Microfocus), the database itself is a COBOL database.
The DSN is a system DSN and works just fine. Via Access/Excel u can read/write data with the DSN successfully.
In C# the
ODBCConnection.ConnectionState is open. Retreiving the table headers works just fine. But when reading data, a strange error occurs. Here is a summerize of the trace log:
- [Retreiving Column Headers]
- ISAMRestrict - NO_ISAM_ERR
- ISAMRewind - NO_ISAM_ERR
- ISAMNextRecord – ISAM_EOF
This occurs when I add a
WHERE clausel to the
SELECT statement. When I do not add a
WHERE clausel and just retreive the whole table, it takes incredible long (about 12 minutes for 40000 records), but at least I retreive data.
So my question would now be, has anyone else occured such a strange behavior with an ODBC driver? End of File where data should be?
Just as a side note, I have contacted Microfocus too, if they have a solution I will post it here.