从一台服务器迁移到另一台服务器tomcat启动报内存溢出的问题

从一台服务器迁移到另一台服务器tomcat启动报内存溢出，操作系统，jdk，tomcat版本都一样，可是就是启动报错
Mar 09, 2018 6:43:12 PM org.apache.catalina.loader.WebappClassLoaderBase clearReferencesJdbc
SEVERE: The web application [/ocd] registered the JDBC driver [com.alibaba.druid.mock.MockDriver] but failed to unregister it when the web application was stopped. To prevent a memory leak, the JDBC Driver has been forcibly unregistered.
Mar 09, 2018 6:43:12 PM org.apache.catalina.loader.WebappClassLoaderBase clearReferencesJdbc
SEVERE: The web application [/ocd] registered the JDBC driver [com.mysql.jdbc.Driver] but failed to unregister it when the web application was stopped. To prevent a memory leak, the JDBC Driver has been forcibly unregistered.
Mar 09, 2018 6:43:12 PM org.apache.catalina.loader.WebappClassLoaderBase clearReferencesJdbc
SEVERE: The web application [/ocd] registered the JDBC driver [com.mysql.fabric.jdbc.FabricMySQLDriver] but failed to unregister it when the web application was stopped. To prevent a memory leak, the JDBC Driver has been forcibly unregistered.
Mar 09, 2018 6:43:12 PM org.apache.catalina.loader.WebappClassLoaderBase clearReferencesJdbc
SEVERE: The web application [/ocd] registered the JDBC driver [com.alibaba.druid.proxy.DruidDriver] but failed to unregister it when the web application was stopped. To prevent a memory leak, the JDBC Driver has been forcibly unregistered.
Mar 09, 2018 6:43:12 PM org.apache.catalina.loader.WebappClassLoaderBase clearReferencesThreads
SEVERE: The web application [/ocd] appears to have started a thread named [FileWatchdog] but has failed to stop it. This is very likely to create a memory leak.
Mar 09, 2018 6:43:12 PM org.apache.catalina.loader.WebappClassLoaderBase clearReferencesThreads
SEVERE: The web application [/ocd] appears to have started a thread named [Abandoned connection cleanup thread] but has failed to stop it. This is very likely to create a memory leak.
Mar 09, 2018 6:43:12 PM org.apache.catalina.loader.WebappClassLoaderBase clearReferencesThreads
SEVERE: The web application [/ocd] appears to have started a thread named [Thread-2] but has failed to stop it. This is very likely to create a memory leak.
Mar 09, 2018 6:43:12 PM org.apache.catalina.loader.WebappClassLoaderBase clearReferencesThreads
SEVERE: The web application [/ocd] appears to have started a thread named [schedulerFactory_Worker-1] but has failed to stop it. This is very likely to create a memory leak.
Mar 09, 2018 6:43:12 PM org.apache.catalina.loader.WebappClassLoaderBase clearReferencesThreads
SEVERE: The web application [/ocd] appears to have started a thread named [schedulerFactory_Worker-2] but has failed to stop it. This is very likely to create a memory leak.
Mar 09, 2018 6:43:12 PM org.apache.catalina.loader.WebappClassLoaderBase clearReferencesThreads
SEVERE: The web application [/ocd] appears to have started a thread named [schedulerFactory_Worker-3] but has failed to stop it. This is very likely to create a memory leak.
Mar 09, 2018 6:43:12 PM org.apache.catalina.loader.WebappClassLoaderBase clearReferencesThreads
SEVERE: The web application [/ocd] appears to have started a thread named [schedulerFactory_Worker-4] but has failed to stop it. This is very likely to create a memory leak.
Mar 09, 2018 6:43:12 PM org.apache.catalina.loader.WebappClassLoaderBase clearReferencesThreads
SEVERE: The web application [/ocd] appears to have started a thread named [schedulerFactory_Worker-5] but has failed to stop it. This is very likely to create a memory leak.