We have an application where we previously used JTDS-1.2.2 jar for connecting to the SQL server using windows authentication and we use NTLMv2 in our environment.
Now we are using mssql jdbc-8.4.1 to connect to the SQL server using windows authentication, but now, for creating 30 connections it takes almost 15 minutes.
Previously while using JTDS-1.2.2, it would take just few milliseconds for creating the 30 connections.
Tried using the same jdbc jar using SQL authentication, the connection is very fast (less than 1 second).
No changes done in the network recently.
Any suggestions would be appreciated.