TUNING
You can increase the number of fields in a database by selecting the advanced database property "Allow more fields in database" which allows the database to contain up to 23,000 fields.
For a database without this option selected, all the field names in a database when concatenated cannot exceed 64K, which results in a database limit of approximately 3000 fields.
To allow more fields in a database:
Procedure
1. Open the database and select File - Application - Properties.
2. Click the Advanced tab.
3. Select "Allow more fields in database."
Related tasks Determining the file format of a database