Attributes the System Uses in the Scan Device Point

Attribute Name Description
initial hist read

This attribute is used to both indicate the use of the new CE based data historian and as a flag for the scan task to use to indicate the initial read from the data historian.

[warning] If this attribute does not exist, the scan task will assume that the previous non-CE based data historian is being used.
device stats

A vector updated with communication statistics on an ongoing basis. Each element of the vector contains a counter representing the total number of I/O transactions for a specific condition. These values are incremented indefinitely. To count on a timed bases (e.g. daily), an application should copy values into other attributes. Use the following names, defined in oraScan.h, as offsets into the vector:

Index Value Index Name Contents
0 TRANS_ATTEMPTS Transactions attempted to the Oracle database. These include the INSERT, SELECT, and DELETE SQL command functions.
1 TRANS_SUCCESSFUL Successful transactions to the Oracle database.