A transient property is a property that is designated to have no value saved in the database.
That is, transient properties can have non-null values within the clipboard, but when a clipboard page containing the properties is saved to the PegaRULES database, the value is removed (forced to null) and so is not present within the saved storage stream (BLOB) column. Similarly, when an instance containing a transient property is retrieved from the database and opened on the clipboard, the transient properties have no initial value on the clipboard. .
To mark a property as transient, select the Transient Property checkbox on the Advanced tab of the Property form.
The performance benefit of transient properties is the reduction in space, memory, and bandwidth that is realized (compared to a property with the same value on the clipboard).