On Tue, 2022-04-12 at 09:10 +0000, Kumar, Mukesh wrote: > We have recently done the migration from Oracle Database Version 12C to Azure > PostgreSQL PaaS instance version 11.4 and most of the application functionality > testing has been over and tested successfully > > However, there is 1 process at application level which is taking approx. 10 mins > in PostgreSQL and in oracle it is taking only 3 mins. > > After investigating further we identified that process which is executed from > application end contains 500 to 600 no of short SQL queries into the database. > We tried to run the few queries individually on database and they are taking > less than sec in Postgres Database to execute, and we noticed that in Oracle > taking half of the time as is taking in PostgreSQL. for ex . in oracle same > select statement is taking 300 millisecond and in PostgreSQL it is taking > approx. 600 millisecond which over increases the execution of the process. > > Oracle Database are hosted on ON- Prem DC with dedicated application server on > OnPrem and same for PostgreSQL. How can a database hosted with Microsoft be on your permises? Apart from all other things, compare the network latency. If a single request results in 500 database queries, you will be paying 1000 times the network latency per request. Yours, Laurenz Albe -- Cybertec | https://www.cybertec-postgresql.com
