update undo
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@@ -15,29 +15,4 @@ JOIN
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FROM dba_free_space
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GROUP BY file_id) b
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ON a.file_id = b.file_id
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WHERE a.tablespace_name like 'UNDO%'; -- ou le nom réel de ton UNDO
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prompt <h3>Durée de rétention UNDO : </h3>
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SELECT
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retention,
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tuned_undoretention,
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undoblks,
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expiredblks,
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unexpiredblks,
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tuned_undoretention
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FROM
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v$undostat
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ORDER BY
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begin_time DESC FETCH FIRST 10 ROWS ONLY;
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prompt <h3>Occupation de l’espace dans le UNDO par session : </h3>
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SELECT
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s.sid,
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s.serial#,
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u.name AS username,
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t.used_urec,
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t.used_ublk
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FROM
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v$transaction t
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JOIN v$session s ON t.ses_addr = s.saddr
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JOIN all_users u ON s.user# = u.user_id;
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WHERE a.tablespace_name like 'UNDO%';
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