rbo默认用哪种连接?

想用hash join可是temp空间不够
insert into temp_wow_uuid  select /*+use_hash(the9.memb_info_mapping temp_wow_lg)*/ uuid from the9.memb_info_mapping a,temp_wow_lg b where a.loginname=b.loginname
*
ERROR at line 1:
ORA-12801: error signaled in parallel query server P000
ORA-01652: unable to extend temp segment by 128 in tablespace TEMP

只好:
insert into temp_wow_uuid  select /*+use_hash(the9.memb_info_mapping temp_wow_lg)*/ uuid from the9.memb_info_mapping a,temp_wow_lg b where a.loginname=b.loginname

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