@gon4ik, подскажи по синтаксису второй команды:
java -cp support-tools.jar:com.atlassian.util.benchmark.JIRASQLPerformance:/path/to/your/jdbc-driver.jar com.atlassian.util.benchmark.JIRASQLPerformance user passwrod driverclass jdbc-url driver-classname [numberOfRuns]