From: Ron <ronljohnsonjr@xxxxxxxxx>
Sent: Thursday, August 22, 2019 4:26 PM
To: pgsql-admin@xxxxxxxxxxxxxxxxxxxx
Subject: Re: Postgres DB Slowness
On 8/22/19 9:04 AM,
soumik.bhattacharjee@xxxxxxx wrote:
Hello Members,
We have the below PostgreSQL database recently migrated from Oracle.
The postgres DB parameters are attached here.
# DB Version: 10
# OS Type: Linux
# Total Memory (RAM): 30 GB
#CPU
nproc --all
2
There is huge slowness in the database now with any queries.
Oracle - Select * from TABLENAME- in takes 0.009 milliseconds
PostgreSQL - Same query takes more than 2 minutes.
Have you validated that the Postgres server has the same indexes?
If so, did you ANALYZE all the tables?
--
Angular momentum makes the world go 'round.
Yes Ron, we migrated from Oracle as per same structure and indexes.
I did the analyze for 2-3 tables now as per my SQL query I wrote and also ran for one particular table below –
VACUUM (FULL,ANALYZE) table_name.
