db2start启动报错如下错误：
support for one or more communications protocols failed to start successfully. However, core database manager functionality started successfully.
首先：我用一下设置50030的端口
./db2icrt -p 50030 -s ese -u db2fenc lcinst1 –50030端口
其次：vi /etc/services命令查看段口有没有：结果是有的
然后查找到数据库实例名db2 get dbm cfg | grep -i service lcinst1 。结果没有查到，问题就出现这里
最后修改端口号：命令修改：db2 update dbm cfg using svcename <端口号或者服务名>
我这里的是50030或者lcinst1实例名都可以。重启一下问题解决ok