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Wadhah DAOUEHI
Wadhah DAOUEHI
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Category Archives: Oracle 19c

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Oracle 19c Flashback Technology (1/7): Query

By Wadhah DAOUEHI | August 15, 2025 - 2:57 pm |March 1, 2026 Oracle 19c, Oracle Database
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In mission-critical systems running on Oracle Database 19c, accidental updates are common — especially salary … Read More →

Recommended UNDO Tablespace Size in Oracle 19c Using the Undo Advisor (SQL Only)

By Wadhah DAOUEHI | August 13, 2025 - 1:37 pm |March 1, 2026 Oracle 19c, Oracle Database
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When you change UNDO_RETENTION in Oracle Database 19c, you must ensure that your UNDO tablespace … Read More →

Understanding UNDO Configuration and RETENTION GUARANTEE in Oracle 19c

By Wadhah DAOUEHI | August 8, 2025 - 1:28 pm |March 1, 2026 Oracle 19c, Oracle Database
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Managing UNDO correctly in Oracle Database 19c is critical for transaction consistency, read consistency, flashback … Read More →

Materialized View Log in Oracle 19c (ON COMMIT)

By Wadhah DAOUEHI | August 4, 2025 - 11:21 pm |February 26, 2026 Oracle 19c, Oracle Database
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In Oracle Database 19c, REFRESH FAST ON COMMIT allows a Materialized View (MV) to be … Read More →

Materialized View Log in Oracle 19c (ON DEMAND)

By Wadhah DAOUEHI | August 2, 2025 - 10:51 pm |February 25, 2026 Oracle 19c, Oracle Database
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In Oracle Database 19c, a Materialized View Log (MV Log) is a database object that … Read More →

Reinitializing the Same Password After Expiration in Oracle 19c

By Wadhah DAOUEHI | July 31, 2025 - 7:26 am |February 25, 2026 Oracle 19c, Oracle Database
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In Oracle Database 19c, when a user account (for example SYSTEM) becomes EXPIRED, the password … Read More →

Oracle 19c: Automatic List-Partitioned Table (2/2)

By Wadhah DAOUEHI | October 16, 2024 - 9:45 am |October 16, 2024 Oracle 19c
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In the previous article, from the beginning we have created a new Automatic List partitioning … Read More →

Oracle 19c: Automatic List-Partitioned Table (1/2)

By Wadhah DAOUEHI | October 13, 2024 - 9:24 am |October 16, 2024 Oracle 19c
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The automatic list partitioning method enables list partition creation on demand. An auto-list partitioned table … Read More →

Oracle 19c: Interval Partitioning (2/2)

By Wadhah DAOUEHI | October 6, 2024 - 1:23 pm |October 14, 2024 Oracle 19c
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In the previous article, from the beginning we have created a new interval partitioning table, … Read More →

Oracle 19c: Interval Partitioning (1/2)

By Wadhah DAOUEHI | September 14, 2024 - 12:55 pm |October 14, 2024 Oracle 19c
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Interval partitioning can be used for almost every table that is range partitioned and uses … Read More →

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