The HDB2 File Menu

Created:

Creation date/time of the selected file.

Validated:

If the file is validated the date/time is displayed.

Tag Count:

Number of tags in the selected file.

File Path:

Full path to the location of the selected file.

File Size:

Size of the file on the disk.

Embedded Size:

Files open for writing are larger because additional space is allocated for the TVQs that have yet to come in. This will display the size of the file with the extra space released.

Rolled Over:

True or False depending on whether the file rolled over to a new file (tag key is copied to the next file) or a new file was created when logging started.

Offline:

True or False depending if background validation detected errors in the file.

OK

Normal

???

File not properly closed. The file must be validated to close properly.

Bad

File has some type of corruption but has not been validated to take offline.

Validate:

Runs validation without comparing timestamps to adjacent files. File validation checks the HDB file for errors. Errors occurred when bytes are out of place.

Take Offline:

Adds the offline extension to the file which prevents it from being accessed for reading or writing.
Note: Take Offline is not available if multiple files are selected.

Rename Tags:

Tags names can be renamed within the Canary historian.

Validate

Runs validation without comparing timestamps to adjacent files.

Put Online

Removes the offline extension to allow access for reading and writing

Recover

Available only for Offline files. When a file is taken off-line due to a validation problem, this option will recover any usable data without risking the existing data. Below are the steps the program will execute:
+ Dump all the data and tag information to a file.
+ Transpose to another file into the proper time sequence.
+ Import the data into a temporary DataSet.
+ Insert the new file into the current DataSet.
+ Clean up the temporary files created.
+ Rename the offline file with a .old extension.

Caution: This process can create large files requiring extra disk space and could take several minutes to hours to complete depending on the size of the offline file.

Delete

Available only for off-line files. Brings up a dialog to confirm the deletion of the file. This is a permanent deletion unless the historian runs under a specific account other than system.