Convert a database to Unicode (AL32UTF8) Posted on March 20, 2025, updated on March 10, 2025 by Yannick JaquierTable of contents Preamble DMU preparation DMU scan the database DMU Resolve migration issue DMU convert the database to Unicode References Continue reading
Transparent Application Continuity (TAC) hands-on Posted on March 2, 2025, updated on February 20, 2025 by Yannick JaquierTable of contents Preamble Transparent Application Continuity (TAC) setup Transparent Application Continuity (TAC) testing with SQL*Plus TAC compatible service Transparent Application Continuity (TAC) testing with Java Errors encountered Service not automatically started References Continue reading
Oracle Data Guard per Pluggable Database hands-on Posted on February 10, 2025, updated on February 10, 2025 by Yannick JaquierTable of contents Preamble Databases Data Guard preparation Container databases preparation Create a new pluggable database for replication Data Guard Broker configuration Data Guard Broker configuration creation Copy of source pluggable database datafiles Pluggable Data Guard testing Preparation Switchover Failover Pluggable Data Guard cleaning Errors encountered ORA-00922: missing or invalid option wth edit configuration prepare dgpdb command _DGMGRL legacy service name RMAN duplicate command error DGM-17437 References Continue reading
Is JSON datatype performance really faster than BLOB datatype ? Posted on January 20, 2025, updated on January 20, 2025 by Yannick JaquierTable of contents Preamble Loading JSON into Oracle with Python JSON queries and performance comparison JSON basic queries JSON performance comparison To go further with JSON performance References Continue reading
Automatic SQL Plan Management (ASPM) hands-on Posted on December 30, 2024, updated on January 6, 2025 by Yannick JaquierTable of contents Preamble Automatic SQL Plan Management (ASPM) setup Automatic SQL Plan Management (ASPM) test case We live in a peaceful world (so far) Who has messed up ? Automatic SPM to the rescue References Continue reading
SYS schema hands-on Posted on December 10, 2024, updated on December 10, 2024 by Yannick JaquierTable of contents Preamble SYS schema configuration Instances global waits SYS schema schema view SYS schema side procedures sys.diagnostics() sys.statement_performance_analyzer() sys.format_time() and sys.format_bytes() References Continue reading