07 2021 档案
摘要：In single instance environment, when a deadlock happens, it often reports ORA-60, see Document 15476.1 FAQ: Detecting and Resolving Locking Conflicts
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摘要：很简单的sql： select * from (select * from issue.db_infoorder by creator_date) where rownum<10 执行计划如下： 此查询需要12秒左右。 创建索引 create index idx_time on db_info(cr
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