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Wadhah DAOUEHI
Wadhah DAOUEHI
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Category Archives: Oracle Database

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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 →

Switching Session User in Oracle Database

By Wadhah DAOUEHI | July 29, 2025 - 2:50 pm |February 24, 2026 Oracle Database
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In Oracle Database, session identity and schema context are important concepts for security, auditing, and … Read More →

Monitoring the Oracle Fast Recovery Area (FRA)

By Wadhah DAOUEHI | July 24, 2025 - 1:17 pm |February 24, 2026 Oracle Database, SQL
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1. Objective The objective of monitoring the Fast Recovery Area (FRA) in Oracle is to: … Read More →

Oracle Database 19c: Shared Server mode

By Wadhah DAOUEHI | August 27, 2024 - 12:02 pm |August 27, 2024 Oracle 19c, Oracle Database
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When the system is overloaded or has limited memory, a shared server connection can be … Read More →

SYS.DBMS_BACKUP_RESTORE & SYS.DBMS_RCVMAN RMAN

By Wadhah DAOUEHI | August 20, 2024 - 6:15 pm |August 27, 2024 Oracle 19c, Oracle Database
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While we have the 19c Oracle dataabse and after upgrade the oracle home, we have … Read More →

Enable LOCAL_UNDO for PDBs

By Wadhah DAOUEHI | November 22, 2023 - 11:42 pm |May 26, 2024 Oracle, Oracle Database
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Starting with 12.2, we can enable LOCAL_UNDO for each PDBs while creating an Oracle database … Read More →

Oracle Database Software Upgrade 19.18 to 19.19 (19c)

By Wadhah DAOUEHI | May 14, 2023 - 5:00 pm |May 14, 2023 Linux, Oracle 19c, Oracle Database
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We have an Oracle Database 19.18 and we are going to upgrade the software to … Read More →

RMAN duplicate Database for Data Guard ( 19c )

By Wadhah DAOUEHI | May 13, 2023 - 4:44 pm |May 14, 2023 Linux, Oracle 19c, Oracle Database
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This article lists the command RMAN to create a standby database from active database within … Read More →

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  • Recent Posts

    • OS_AUTHENT_PREFIX External Authentication in Oracle Database 19c
    • Oracle 19c Flashback Technology (7/7): Data Archives
    • Oracle 19c Flashback Technology (6/7): Flashback Database/PDB
    • Oracle 19c Flashback Technology (5/7): TRANSACTION
    • Oracle 19c Flashback Technology (4/7): Table
    • Oracle 19c Flashback Technology (3/7): Drop Table
    • Oracle 19c Flashback Technology (2/7): Versions Query
    • Oracle 19c Flashback Technology (1/7): Query
    • Recommended UNDO Tablespace Size in Oracle 19c Using the Undo Advisor (SQL Only)
    • Understanding UNDO Configuration and RETENTION GUARANTEE in Oracle 19c
    • Materialized View Log in Oracle 19c (ON COMMIT)
    • Materialized View Log in Oracle 19c (ON DEMAND)
    • Reinitializing the Same Password After Expiration in Oracle 19c
    • Switching Session User in Oracle Database
    • Monitoring the Oracle Fast Recovery Area (FRA)
    • Database 19c Vault: OWNER/Manager privileges !
    • Enabling the Database Vault (Initialisation parameters)
    • [FATAL] [DBT-09352] Error in validating dbv_owner credentials.
    • Oracle 19c: Convert Table to range partition online
    • Oracle 19c: Automatic List-Partitioned Table (2/2)
    • Oracle 19c: Automatic List-Partitioned Table (1/2)
    • Oracle 19c: Interval Partitioning (2/2)
    • Oracle 19c: Interval Partitioning (1/2)
    • Oracle Database 19c: Shared Server mode
    • SYS.DBMS_BACKUP_RESTORE & SYS.DBMS_RCVMAN RMAN
    • Oracle 19c: pdb_storage_clause
    • NGINST-64051: Invalid Central Inventory location “null”.
    • 23ai: Create table if not exists
    • 23ai: Direct join with DELETE
    • 23ai: Direct join with UPDATE
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