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Could not open connection
org.hibernate.exception.JDBCConnectionException: Unable to acquire JDBC Connection at org.hibernate.exception.internal.SQLExceptionTypeDelegate.convert(SQLExceptionTypeDelegate.java:48)[org.hibernate.hibernate-core-5.1.0.Final.jar:5.1.0.Final] at org.hibernate.exception.internal.StandardSQLExceptionConverter.convert(StandardSQLExceptionConverter.java:42)[org.hibernate.hibernate-core-5.1.0.Final.jar:5.1.0.Final] at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:111)[org.hibernate.hibernate-core-5.1.0.Final.jar:5.1.0.Final] at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:97)[org.hibernate.hibernate-core-5.1.0.Final.jar:5.1.0.Final] at org.hibernate.resource.jdbc.internal.LogicalConnectionManagedImpl.acquireConnectionIfNeeded(LogicalConnectionManagedImpl.java:87)[org.hibernate.hibernate-core-5.1.0.Final.jar:5.1.0.Final] at org.hibernate.resource.jdbc.internal.LogicalConnectionManagedImpl.getPhysicalConnection(LogicalConnectionManagedImpl.java:109)[org.hibernate.hibernate-core-5.1.0.Final.jar:5.1.0.Final] at org.hibernate.engine.jdbc.internal.StatementPreparerImpl.connection(StatementPreparerImpl.java:47)[org.hibernate.hibernate-core-5.1.0.Final.jar:5.1.0.Final] at org.hibernate.engine.jdbc.internal.StatementPreparerImpl$5.doPrepare(StatementPreparerImpl.java:146)[org.hibernate.hibernate-core-5.1.0.Final.jar:5.1.0.Final] at org.hibernate.engine.jdbc.internal.StatementPreparerImpl$StatementPreparationTemplate.prepareStatement(StatementPreparerImpl.java:172)[org.hibernate.hibernate-core-5.1.0.Final.jar:5.1.0.Final] at org.hibernate.engine.jdbc.internal.StatementPreparerImpl.prepareQueryStatement(StatementPreparerImpl.java:148)[org.hibernate.hibernate-core-5.1.0.Final.jar:5.1.0.Final] at org.hibernate.loader.Loader.prepareQueryStatement(Loader.java:1927)[org.hibernate.hibernate-core-5.1.0.Final.jar:5.1.0.Final] at org.hibernate.loader.Loader.executeQueryStatement(Loader.java:1896)[org.hibernate.hibernate-core-5.1.0.Final.jar:5.1.0.Final] at org.hibernate.loader.Loader.executeQueryStatement(Loader.java:1874)[org.hibernate.hibernate-core-5.1.0.Final.jar:5.1.0.Final] at org.hibernate.loader.Loader.doQuery(Loader.java:919)[org.hibernate.hibernate-core-5.1.0.Final.jar:5.1.0.Final] at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:336)[org.hibernate.hibernate-core-5.1.0.Final.jar:5.1.0.Final] at org.hibernate.loader.Loader.doList(Loader.java:2610)[org.hibernate.hibernate-core-5.1.0.Final.jar:5.1.0.Final] at org.hibernate.loader.Loader.doList(Loader.java:2593)[org.hibernate.hibernate-core-5.1.0.Final.jar:5.1.0.Final] at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2422)[org.hibernate.hibernate-core-5.1.0.Final.jar:5.1.0.Final] at org.hibernate.loader.Loader.list(Loader.java:2417)[org.hibernate.hibernate-core-5.1.0.Final.jar:5.1.0.Final] at org.hibernate.loader.criteria.CriteriaLoader.list(CriteriaLoader.java:109)[org.hibernate.hibernate-core-5.1.0.Final.jar:5.1.0.Final] at org.hibernate.internal.SessionImpl.list(SessionImpl.java:1787)[org.hibernate.hibernate-core-5.1.0.Final.jar:5.1.0.Final] at org.hibernate.internal.CriteriaImpl.list(CriteriaImpl.java:363)[org.hibernate.hibernate-core-5.1.0.Final.jar:5.1.0.Final] at org.hibernate.internal.CriteriaImpl.uniqueResult(CriteriaImpl.java:385)[org.hibernate.hibernate-core-5.1.0.Final.jar:5.1.0.Final] at modules.rpc.handler.AuthorizedRancamImpl.lambda$getStatus$3(AuthorizedRancamImpl.java:258)[rancam-api.rancam-api-0.1.0.jar:0.1.0] at utils.JPA.transaction(JPA.java:39)[rancam-api.rancam-api-0.1.0.jar:0.1.0] at utils.JPA.transaction(JPA.java:82)[rancam-api.rancam-api-0.1.0.jar:0.1.0] at modules.rpc.handler.AuthorizedRancamImpl.getStatus(AuthorizedRancamImpl.java:250)[rancam-api.rancam-api-0.1.0.jar:0.1.0] at com.rancam.models.rpc.AuthorizedRancamGrpc$MethodHandlers.invoke(AuthorizedRancamGrpc.java:2249)[rancam-api.rancam-api-0.1.0.jar:0.1.0] at io.grpc.stub.ServerCalls$1$1.onHalfClose(ServerCalls.java:150)[io.grpc.grpc-stub-1.0.0.jar:1.0.0] at io.grpc.PartialForwardingServerCallListener.onHalfClose(PartialForwardingServerCallListener.java:48)[io.grpc.grpc-core-1.0.0.jar:1.0.0] at io.grpc.ForwardingServerCallListener.onHalfClose(ForwardingServerCallListener.java:38)[io.grpc.grpc-core-1.0.0.jar:1.0.0] at io.grpc.ForwardingServerCallListener$SimpleForwardingServerCallListener.onHalfClose(ForwardingServerCallListener.java:55)[io.grpc.grpc-core-1.0.0.jar:1.0.0] at io.grpc.Contexts$ContextualizedServerCallListener.onHalfClose(Contexts.java:102)[io.grpc.grpc-core-1.0.0.jar:1.0.0] at io.grpc.internal.ServerCallImpl$ServerStreamListenerImpl.halfClosed(ServerCallImpl.java:260)[io.grpc.grpc-core-1.0.0.jar:1.0.0] at io.grpc.internal.ServerImpl$JumpToApplicationThreadServerStreamListener$2.runInContext(ServerImpl.java:503)[io.grpc.grpc-core-1.0.0.jar:1.0.0] at io.grpc.internal.ContextRunnable.run(ContextRunnable.java:52)[io.grpc.grpc-core-1.0.0.jar:1.0.0] at io.grpc.internal.SerializingExecutor$TaskRunner.run(SerializingExecutor.java:154)[io.grpc.grpc-core-1.0.0.jar:1.0.0] at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)[na:1.8.0_74] at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)[na:1.8.0_74] at java.lang.Thread.run(Thread.java:745)[na:1.8.0_74]Caused by: java.sql.SQLTransientConnectionException: db-pool - Connection is not available, request timed out after 30602ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:555)[com.zaxxer.HikariCP-2.4.7.jar:na] at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:188)[com.zaxxer.HikariCP-2.4.7.jar:na] at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:147)[com.zaxxer.HikariCP-2.4.7.jar:na] at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:83)[com.zaxxer.HikariCP-2.4.7.jar:na] at org.hibernate.engine.jdbc.connections.internal.DatasourceConnectionProviderImpl.getConnection(DatasourceConnectionProviderImpl.java:122)[org.hibernate.hibernate-core-5.1.0.Final.jar:5.1.0.Final] at org.hibernate.internal.AbstractSessionImpl$NonContextualJdbcConnectionAccess.obtainConnection(AbstractSessionImpl.java:386)[org.hibernate.hibernate-core-5.1.0.Final.jar:5.1.0.Final] at org.hibernate.resource.jdbc.internal.LogicalConnectionManagedImpl.acquireConnectionIfNeeded(LogicalConnectionManagedImpl.java:84)[org.hibernate.hibernate-core-5.1.0.Final.jar:5.1.0.Final] ... 35 more