Section 2.8: DECIMAL format Up Chapter 2: Install Section 2.10: Check 

2.9 Remote connection to pg8:

If you’re using the PG8 connector - then you can use any of :
PG_DBPATH
PG_PORT
PG_HOST
Syntax :
export PG_DBPATH=dbname[@server][:port]
export PG_PORT=1234
export PG_HOST=tstserv
If PostgreSQL is running on a remote machine, make sure you configure it with TCP/IP enabled. (If using ECPG, you’ll need to check how to change the target host for that, but its normally PG_DBPATH )
These can be read from the aubitrc file if you prefer (by default $HOME/.aubit4gl/aubitrc)
If you want a different username/password depending on the database you’re connecting to, then you can use the Aubit4GL ACL file. The filename can be set explicitly in $A4GL_SQLACL setting. If that variable isn’t set, it will be read from $HOME/.aubit4gl.acl and if that doesn’t exist, it will try /etc/aubit4gl.acl
(On windows, it reads $AUBITDIR/etc/aubit4gl.acl, if that doesn’t exist, it tries c:/aubit4gl/aubit4gl.acl)
The ACL file has the following format :
dbname:username:password
Put the password in plain text - the first time the file is read, the password will be encrypted. (This isn’t a particularly secure encryption, but it is better than nothing!)

 Section 2.8: DECIMAL format Up Chapter 2: Install Section 2.10: Check