Problem in reading history data from Citadel

Question

While Iam trying to fetch some (max of 1 hour) data from the citadel database Iam getting some error. I have attached a bmp file which is a screen print of two errors. What is this error ? How can I rectify it ?
I have re-installed the whole OS & LabVIEW but the scf file is the same, still the problem persists. Is there some problem in the scf file.
Attachments:
errors.bmp ‏97 KB

Answer 1

Thank you Mr. Carl for your prompt reply.
I want to describe the manner in which my application is storing the data.
1. I have two folders, one folder contians the current data and the other folder contains the back up data.
2. Program takes back up every one hour from the current data folder to the backup folder in the the folder of todays date (d:\Back_UP\2004_03_12)
3. On the next day my application creates another folder (d:\Back_UP\2004_03_13) and the data is now backed up in this folder.
4. The data in the current days folder (i.e., d:\Back_UP\2004_03_13) is accessable through the VIs in LabVIEW DSC but the problem is in the data which is in the "older folders" (d:\Back_UP\2004_03_11, d:\Back_UP\2004_03_12).
Note : This app
lication was running fine on the same PC but I don't know if anyone has done some changes in the configurations or tag file. Right now Iam facing a problem.
Iam listing my observations in detail for the data in the "older folders"-
1. I have not tried to fetch the data with SQL through ODBC.
2. If I give a query for fetching the data from the Citadel using the VIs in LabVIEW DSC I get the errors which are there in the bmp files.
3. The data is accessable through MAX and I can even export it.
4. Once the data folder is listed under the "Historical Data" and the MAX is closed Iam able to fetch the data from the Citadel through the VIs in LabVIEW DSC.
I have LabVIEW DSC 6.1.
Thank you.
Ravinder