[亲测]org.h2.jdbc.JdbcSQLException: Database may be already in use: null. Possible solutions: close al
来源：99网
要做：尝试从Java应用程序使用H2数据库
问题：org.h2.jdbc.JdbcSQLException:Database may be already in use: null. Possible solutions: close all other connection(s); use the server mode [90020-197]