请问在OceanBase数据库这样的操作，有什么问题？是我的硬件资源不够？还是什么原因呢,

"我在8C16G的机器启了一个本地部署单节点OB，在查询到可以用资源的是以下的情况下，
SELECT a.zone,CONCAT(a.svr_ip,':',a.svr_port) observer, cpu_total, (cpu_total-cpu_assigned) cpu_free, ROUND(mem_total/1024/1024/1024) mem_total_gb, ROUND((mem_total-mem_assigned)/1024/1024/1024) mem_free_gb, ROUND(disk_total/1024/1024/1024) disk_total_gb, SUBSTR(a.build_version,1,6) VERSION,usec_to_time(b.start_service_time) start_service_time FROM oceanbase.all_virtual_server_stat a JOIN oceanbase.all_server b ON (a.svr_ip=b.svr_ip AND a.svr_port=b.svr_port) ORDER BY a.zone, a.svr_ip;
+-------+----------------+-----------+----------+--------------+-------------+---------------+---------+----------------------------+
| zone | observer | cpu_total | cpu_free | mem_total_gb | mem_free_gb | disk_total_gb | VERSION | start_servicetime |
+-------+----------------+-----------+----------+--------------+-------------+---------------+---------+----------------------------+
| zone1 | 127.0.0.1:2882 | 8 | 5.5 | 13 | 10 | 300 | 3.1.5 | 2023-07-21 15:22:04.177623 |
+-------+----------------+-----------+----------+--------------+-------------+---------------+---------+----------------------------+
1 row in set (0.009 sec)

我重新用sys租户想创建一个新的租户用来承接测试业务，在创建资源单元unit
CREATE resource unit my_unit_4c8g max_cpu=4, min_cpu=4, max_memory='8g', min_memory='8g', max_iops=10000, min_iops=1000, max_session_num=1000000, max_disk_size='150g';
然后再创建资源池的时候：
CREATE resource pool mysql_pool unit = 'my_unit_4c8g', unit_num = 1;
一直报这个错：ERROR 4624 (HY000): machine resource 'zone1' is not enough to hold a new unit 这样子的操作，有什么问题？是我的硬件资源不够？还是,,,
无论我怎样创建资源单元，例如：CREATE resource unit my_unit_4c8g max_cpu=1 min_cpu=1, max_memory='1g', min_memory='1g', max_iops=10000, min_iops=1000, max_session_num=1000000, max_disk_size='20g';
在创建资源池的是否都是报这个错：ERROR 4624 (HY000): machine resource 'zone1' is not enough to hold a new unit，麻烦老师指引下，谢谢"