PostgreSQL is a powerful open-source object-relational database system with over 30 years of active development. Characteristics such as reliability, high performance, and feature robustness make this database very popular. As a result, many applications developed at small to large scale enterprises utilize this database. Moein monitoring system is capable of monitoring and visualizing this database metrics. It can collect performance indicators from databases, DMLs, transactions, locks, indexes, sessions, and executed queries. Performance metrics for this database are:

1. Total Sessions
2. Idle Sessions
3. Active Sessions
4. Total Committed Transactions Rate
5. Total Rolled Back Transactions Rate
6. Average Cache Hit Ratio
7. Rows Update Rate
8. Rows Delete Rate
9. Rows Insert Rate
10. Rows Fetched Rate
11. Rows Returned Rate
12. Deadlocks Rate
13. Cancelled Queries
14. Index Scans Rate
15. Index Reads Rate
16. Index Fetches Rate
17. Number Of Scheduled Checkpoints
18. Number Of Requested Checkpoints
19. Number Of Buffers Written
20. Buffer Clean
21. Maximum Written Clean
22. Buffer Written Directly
23. Allocated Buffer
24. Checkpoint Write Time
25. Checkpoint Sync Time 
26. Locks Held
27. Locks Wait

Databases:

1. List Of Databases
2. Database Size
3. Idle Sessions
4. Active Sessions
5. Total Sessions
6. Committed Transactions
7. Committed Transactions Rate
8. Rolled Back Transactions
9. Rolled Back Transactions Rate
10. Cache Hit Ratio
11. Rows Update Rate
12. Rows Delete Rate
13. Rows Insert Rate
14. Rows Fetched Rate
15. Rows Returned Rate
16. Deadlocks Rate
17. Cancelled Queries

Top Queries:

1. Most Frequently Executed Queries
2. Top Slow Running Queries
3.  Top Queries By Effected Rows Count
4.  Top Queries By Average IO Read Time
5.  Top Queries By Average IO Write Time

Communication Protocols:

• JDBC