04-28-2010 10:16 AM
Welcome to the Act! Online Community!
There are no limits as to how large a history item should be, can you explain what you are attempting to accomplish? With more information we may be able to provide detailed information or alternatives.
The Act! database (using SQL Server 2005 Standard) has a size limit of 4gb. You can check the size of your database by looking at the size of the 'databasename.ADF' file.