# Aurora PostgreSQL functions reference
Following, you can find a list of Aurora PostgreSQL functions that are available for your Aurora DB clusters that run the Aurora PostgreSQL-Compatible Edition DB engine. These Aurora PostgreSQL functions are in addition to the standard PostgreSQL functions. For more information about standard PostgreSQL functions, see [PostgreSQL–Functions and Operators](https://www.postgresql.org/docs/current/functions.html).
## Overview
You can use the following functions for Amazon RDS DB instances running Aurora PostgreSQL:
+ [aurora\_db\_instance\_identifier](aurora_db_instance_identifier.md)
+ [aurora\_ccm\_status](aurora_ccm_status.md)
+ [aurora\_global\_db\_instance\_status](aurora_global_db_instance_status.md)
+ [aurora\_global\_db\_status](aurora_global_db_status.md)
+ [aurora\_list\_builtins](aurora_list_builtins.md)
+ [aurora\_replica\_status](aurora_replica_status.md)
+ [aurora\_stat\_activity](aurora_stat_activity.md)
+ [aurora\_stat\_backend\_waits](aurora_stat_backend_waits.md)
+ [aurora\_stat\_bgwriter](aurora_stat_bgwriter.md)
+ [aurora\_stat\_database](aurora_stat_database.md)
+ [aurora\_stat\_dml\_activity](aurora_stat_dml_activity.md)
+ [aurora\_stat\_get\_db\_commit\_latency](aurora_stat_get_db_commit_latency.md)
+ [aurora\_stat\_logical\_wal\_cache](aurora_stat_logical_wal_cache.md)
+ [aurora\_stat\_memctx\_usage](aurora_stat_memctx_usage.md)
+ [aurora\_stat\_optimized\_reads\_cache](aurora_stat_optimized_reads_cache.md)
+ [aurora\_stat\_plans](aurora_stat_plans.md)
+ [aurora\_stat\_reset\_wal\_cache](aurora_stat_reset_wal_cache.md)
+ [aurora\_stat\_statements](aurora_stat_statements.md)
+ [aurora\_stat\_system\_waits](aurora_stat_system_waits.md)
+ [aurora\_stat\_wait\_event](aurora_stat_wait_event.md)
+ [aurora\_stat\_wait\_type](aurora_stat_wait_type.md)
+ [aurora\_version](aurora_version.md)
+ [aurora\_volume\_logical\_start\_lsn](aurora_volume_logical_start_lsn.md)
+ [aurora\_wait\_report](aurora_wait_report.md)