Odoo biggest issue same thing again and again, No customized code till date.

After running ERP sudden odoo failed to run and even not gives any message, I had 4GB RAM & 200 GB HDD Space.

Till date only 9 GB HDD Used and RAM almost free, only 800MB used max.
Odoo Seems wired issues hanging a lot, slow down to use this product. ..

.2015-10-23 20:00:02,889 9844 ERROR ? openerp.addons.bus.bus: Bus.loop error, sleep and retryBe

Traceback (most recent call last):

File "/home/al/v8/odoo/addons/bus/bus.py", line 136, in run

self.loop()

File "/home/al/v8/odoo/addons/bus/bus.py", line 122, in loop

conn.poll()

OperationalError: server closed the connection unexpectedly

This probably means the server terminated abnormally

before or while processing the request.

2015-10-23 20:00:03,950 9844 ERROR eikard openerp.sql_db: Connection to the database failed

Traceback (most recent call last):

File "/home/al/v8/odoo/openerp/sql_db.py", line 522, in borrow

result = psycopg2.connect(dsn=dsn, connection_factory=PsycoConnection)

File "/usr/lib/python2.7/dist-packages/psycopg2/__init__.py", line 179, in connect

connection_factory=connection_factory, async=async)

OperationalError: could not connect to server: No such file or directory

Is the server running locally and accepting

onnections on Unix domain socket "/var/run/postgresql/.s.PGSQL.5432"?.