GS-00303, Failed to establish tcp connection to [127.0.0.1]:[1888], errno 111报错

GS-00303, Failed to establish tcp connection to [127.0.0.1]:[1888], errno 111

错误原因：建立TCP套接字失败

尝试了一下，先看下数据库服务器是否启动？

[omm@gao ~]$ cd $GSDB_HOME/bin

[omm@gao bin]$ python zctl.py -t status
Zengine instance has not started. ----实例未被启动

[omm@gao bin]$ python zctl.py -t start ---启动命令
Successfully started instance.

[omm@gao ~]$ zsql / as sysdba -q

connected.

SQL>

[omm@gao bin]$ python zctl.py -t stop --停止命令
Successfully stopped instance.