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本帖最后由 botang 于 2016-5-9 23:07 编辑
课程第15次(2016-04-28星期四):UNDO和体系结构
【上完1Z0-052的第10章】:UNDO
【上完1Z0-052的第0章】:网格和1Z0-052本身介绍
【1Z0-051】:共10章
【1Z0-052】:共6章
2016-04-28.sql:
- select * from dba_rollback_segs;
- select * from dba_data_files;
- select * from dba_tablespaces;
- alter tablespace undotbs1 retention guarantee;
- alter tablespace undotbs1 retention noguarantee;
- ---
- ---
- alter user dbsnmp identified by oracle_4U account unlock;
- alter user sysman identified by oracle_4U account unlock;
- ---
- select * from v$undostat;
- 00000001EC7583E0
- 00000001ECA84988
- ---
- select sid, serial#, paddr, saddr
- from v$session where terminal='pts/4';
复制代码
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