执行 DDL 报错 4179 Operation not allowed now 的原因和解决方法

[2024-07-09 12:06:37.887370] WDIAG [RS] get_and_check_table_schema (ob_ddl_service.cpp:12906) [105988][DDLQueueTh0][T0][xxxxx-xxxxx-xxxxx-xxxxx] [lt=24][errcode=-4179] offline ddl is being executed, other ddl operations are not allowed(ret=-4179, is_offline_ddl=false, *orig_table_schema={simple_table_schema:{tenant_id:1008, database_id:510208, tablegroup_id:18446744073709551615, table_id:511039, association_table_id:516628, in_offline_ddl_white_list:false, table_name:"city_hlhtqx_bu_hrxw_jcmx_add", session_id:0

-- 展示集群 DDL 操作的执行状态和进度
select * from gv$session_longops;