The database is already in use by another process

nbaertuo

java.sql.SQLException: The database is already in use by another process: org.hsqldb.persist.NIOLockFile@afdb14ea[file =D:\db\human.lck, exists=true, locked=false, valid=false, fl =null]: java.lang.Exception:  另一个程序已锁定文件的一部分，进程无法访问。 : D:\db\human.lck
原写法：
def sql = Sql.newInstance("jdbc:hsqldb:file:d:/db/human;ifexists=true", "sa",
                  "", "org.hsqldb.jdbcDriver")
 
正确写法：
def sql = Sql.newInstance("jdbc:hsqldb:hsql://localhost/xdb;ifexists=true", "sa",
                  "", "org.hsqldb.jdbcDriver")