To guarantee instance stability and security, ApsaraDB for PostgreSQL has the following restrictions.
|Modify database parameter settings||Currently it is not supported.|
|Database root permission||RDS does not offer the superuser permission.|
|Database backup||Data backup can only be performed through pg_dump.|
|Data migration||Data backed up through pg_dump can only be restored through psql.|
|Build database replication||
The system automatically builds the HA mode based on PostgreSQL stream replication.
The PostgreSQL standby node is invisible and cannot be accessed directly.
|Restart the RDS instance||The instance must be restarted through the RDS console or Open APIs.|
|Network setting||If the access mode of the instance is safe connection mode, enabling net.ipv4.tcp_timestamps in SNAT mode is not allowed.|