前几天在帮开发人员往中间库迁移一批数据的时候，遇到UNDO表空间无法自动扩展的问题，告警日志如下： Tue Jul 21 11:26:13 2015 statement in resumable session 'CHGSHS.SYS_IMPORT_TABLE_01.2' was suspended due to ORA-30036: unable to extend segment by 8 in undo tablespace 'UNDOTB1' statement in res ...