I had the libado and postgres module missing.
Now i've installed them but i receive the error:
Fatal error: postgres7 error: [-1: ERROR: syntax error at or near "(" at character 271] in EXECUTE("CREATE TABLE history ( session_name VARCHAR(32) NOT NULL, page_id INTEGER, client_id INT2, data BYTEA , FOREIGN KEY(session_name) REFERENCES session(name), PRIMARY KEY(client_id,session_name,page_id), INDEX(session_name,client_id), INDEX(session_name) ) WITH OIDS") in /var/www/epesi/libs/adodb/adodb-errorhandler.inc.php on line 77
PHP 5.2.0
libphp-adodb 4.93a-1.1
Postgres 8.3.1