Working with backup sets : PostgreSQL database backup sets (Linux or Mac) : Before you begin
 
Before you begin
There are some prerequisites for performing backups of PostgreSQL Databases:
The psql and pg_dump utilities must be listed in the PATH environment variable of the user ’root’ on the DS-Client computer.
The DS-Client computer’s psql and pg_dump utilities must be compatible with the PostgreSQL version running on the source machine (PostgreSQL server).
For more information, refer to the following Knowledge Base article in “Backup / restore of PostgreSQL database servers”.