The tables are:

• pr4_perf_usage – Supports system usage reporting
• pr_log – Other logs
• pc_history_work – Used for work item history
• pr_history_data – Used for data object history
• pc_index_workparty – Used for work party identifiers
• pc_data_workattach – Used for attachments to work items
• pc_link_attachment – Used for attachments to work items
• pr_data – Used for work item parties, outgoing email
• pc_work or similar tables, which store work items.

The following tables typically show stable or slowly growing row counts:

• pr4_rule_* – Rules
• pc_assign_* – Assignments (not pr_assign )
• pr_sys_* – System tables
• pr4_base – Foundation rules
• pr4_history_rule – Rule change history