HikariPool-1 - Connection is not available, request timed out after 30050ms - oracle

Question

I am using Oracle DB with spring-boot(2.6.2), upon running batch services, I am getting the following error:
*
36mo.h.engine.jdbc.spi.SqlExceptionHelper SQL Error: 0, SQLState: null
31mERROR 36mo.h.engine.jdbc.spi.SqlExceptionHelper: HikariPool-1 - Connection is not available, request timed out after 30050ms.
32mDEBUG 36mcom.zaxxer.hikari.pool.HikariPool: HikariPool-2 - Pool stats (total=10, active=0, idle=10, waiting=0)
32mDEBUG 36mcom.zaxxer.hikari.pool.: HikariPool-2 - Fill pool skipped, pool is at sufficient level.
32mDEBUG 36mcom.zaxxer.hikari.pool.HikariPool: HikariPool-1 - Pool stats (total=10, active=10, idle=0, waiting=1)
32mDEBUG 36mcom.zaxxer.hikari.pool.: HikariPool-1 - Fill pool skipped, pool is at sufficient level.
32mDEBUG 36mcom.zaxxer.hikari.pool.HikariPool: HikariPool-1 - Timeout failure stats (total=10, active=10, idle=0, waiting=0)
33m WARN 36mo.h.engine.jdbc.spi.SqlExceptionHelper: SQL Error: 0, SQLState: null
31mERROR 36mo.h.engine.jdbc.spi.SqlExceptionHelper: HikariPool-1 - Connection is not available, request timed out after 30002ms.
32mDEBUG 36mcom.zaxxer.hikari.pool.HikariPool: HikariPool-2 - Pool stats (total=10, active=0, idle=10, waiting=0)
32mDEBUG 36mcom.zaxxer.hikari.pool.: HikariPool-2 - Fill pool skipped, pool is at sufficient level.
32mDEBUG 36mcom.zaxxer.hikari.pool.HikariPool: HikariPool-1 - Pool stats (total=10, active=10, idle=0, waiting=1)
32mDEBUG 36mcom.zaxxer.hikari.pool.HikariPool: HikariPool-1 - Fill pool skipped, pool is at sufficient level.
32mDEBUG 36mcom.zaxxer.hikari.pool.HikariPool: HikariPool-1 - Timeout failure stats (total=10, active=10, idle=0, waiting=0)
33m WARN 36mo.h.engine.jdbc.spi.SqlExceptionHelper SQL Error: 0, SQLState: null
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I see sometime the total connection becomes 0 and then it reaches 10 and then again back to 0. I went through websites for this error where they mentioned error related DataSource object. Below is the details of the properties file:
spring:
datasource:
ss:
driver-class-name: oracle.jdbc.driver.OracleDriver
hikari:
connection-timeout: 5000
maximum-pool-size: 10
idle-timeout: 60000
max-lifetime: 1800000
minimum-idle: 2
jdbc-url: ------URL---
Here is the configuration class function:
#Bean
#ConfigurationProperties(prefix="spring.datasource.ss")
public DataSource sourceDataSource() {
return DataSourceBuilder.create().build();
}
// EntityManager bean
#Bean
public LocalContainerEntityManagerFactoryBean sourceEntityManager() {
LocalContainerEntityManagerFactoryBean em
= new LocalContainerEntityManagerFactoryBean();
em.setDataSource(sourceDataSource());
........... .
I tried solving this...but didn't got concrete solution. So how to remove this error ?