The Log Copy Queue

To whom it may concern:

We are currently running SQL Backup 7.6.0.29. We use the log copy queue to support log shipping for a system that experiences high month-end transaction volume. As a result, the log copy queue has trouble keeping up with copying the larger log backup files.

What I'm seeing when querying the backupfiles_copylist via the sqbdata utility is that many of the queue entries are getting flagged with a status of E. Based on a forum search, it sounds like a status of E indicates the queue entry has expired, presumably because it was not copied within the 24 default period. Given that, I have the following questions:

1) It appears that the files are not being copied in the order they were created. By that, I mean there are files with a later [created] date which are getting copied before files with an earlier date. Is there anything I could be doing wrong in my config to cause this? It seems counter-intuitive to me.

2) Are there best practices on config settings for the registry entries that control copy behavior, specifically: COPYTO:ExpiryIntervalInMinutes and
COPYTO:ThreadCount ? In addition, is there a max value allowed for COPYTO:ExpiryIntervalInMinutes?

3) What are the valid values for the [status] field in backupfile_copylist? Here are the ones I think I know: A = Active, E = Expired, P = Pending, S = Success.

4) Finally, how is the data in these admin tables maintained? Do we need to manually schedule a job to execute cleanup commands against them? If so, can you provide a full list of the tables that should be included?

Thanks in advance for any information or suggestions you can provide.

Regards,

-Mike Eastland