We are using H2 db as in-memory mode.

Thanks.

On Wednesday, 28 June 2023 at 10:14:54 UTC+5:30 Dhanasekar Rengasamy wrote:

<https://stackoverflow.com/posts/76329629/timeline>

We have migrated a Spring Boot 2.x to Spring Boot 3.x and still using the 
same H2 version 2.1.210. Internally it uses the whole stack (Spring data 
JPA, Hibernate, Hikari etc.)

We found that H2 performance drastically decreased with Spring boot 3.x. It 
is taking more that Hrs when inserting 150,000 rows in H2 table, earlier it 
was less than 5 min.

Kindly suggest, what config changes may be needed to improve the DB 
performance?

Thanks in advance!!

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