Pega^® Platform does not restrict the length of property values. However, you can set the size limit for a property value by setting the Max length field on the Advanced tab of the Property form. Long properties, especially if you have thousands of them in memory, can affect performance, including memory and database traffic. The JVM memory limit for the system must be large enough to handle the number of long properties that are processed.

In addition to performance considerations, you might not be able to expose properties with long values as database columns, depending on your database software's aggregate size limit for exposed columns. If a property exceeds your database's aggregate size limit, making the property too long to expose as a database column, consider dividing the property and storing it as a number of shorter properties.

If your property is exposed, set the property value size in the Max length field to equal the maximum size of the database column to ensure that your data fits into the column.