postgresSQL terminating abnormally - database

Question

I am trying to update postgresSQL table with psycopg2 (python package) sometimes it is failing with below error.
server closed the connection unexpectedly
This probably means the server terminated abnormally
before or while processing the request.
Here is the code
from psycopg2 import pool
now = datetime.now()
logoff_time = datetime(now.year, now.month, now.day, 15, 0, 0)
while True:
time.sleep(1)
try:
status = 'EXECUTED'
exec_type1 = 'CANCELLED'
exec_type2 = 'COMPLETED'
try:
postgreSQL_pool = pool.SimpleConnectionPool(1, 20, host = db_host,
database = db_name,
port = db_port,
user = db_user,
password = db_pwd)
if postgreSQL_pool:
print("Connection pool created successfully")
conn = postgreSQL_pool.getconn()
except (Exception, psycopg2.DatabaseError) as error:
print(error)
sql = """ UPDATE orders SET status = %s, executed_type = %s WHERE order_id = %s"""
updated_rows = 0
try:
cur = conn.cursor()
cur.execute(sql, (status, exec_type1, order_id,))
conn.commit()
updated_rows = cur.rowcount
cur.close()
break
except (Exception, psycopg2.DatabaseError) as error:
print(error)
print(updated_rows)
except Exception as e:
print(e)
psycopg2 version: '2.8.6 (dt dec pq3 ext lo64)'
Postgres: PostgreSQL 12.7 on x86_64-pc-linux-gnu, compiled by gcc (GCC) 4.8.3 20140911 (Red Hat 4.8.3-9), 64-bit
it is pretty much simple task but facing challenges. suggestions please

Answer 1

The server is crashing for some reason that you might be able to read in the server's logs.