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
Information schema hands-on Posted on November 20, 2024, updated on November 20, 2024 by Yannick JaquierTable of contents Preamble Information Schema configuration Information Schema global status queries Aborted clients All clients traffic Comparison of on-disk and memory temporary tables Com_xxx and Handler_xxx variables InnoDB free and dirty space and data read and written InnoDB log buffer write rate Query cache statistics Tables joins performance Information Schema InnoDB queries InnoDB buffer pool statistics InnoDB locks InnoDB metrics Information Schema remaining tables Processlist Routines Users and Schemas privileges System variables References Continue reading
Performance schema hands-on – part 2 Posted on October 30, 2024, updated on December 6, 2024 by Yannick JaquierTable of contents Preamble Performance Schema with global and digest instrumentation Performance Schema with global, thread and current event instrumentation Performance Schema with global, thread and event history instrumentation Performance Schema impact References Continue reading
Performance schema hands-on – part 1 Posted on October 10, 2024, updated on December 6, 2024 by Yannick JaquierTable of contents Preamble Performance schema activation and configuration Performance Schema with global instrumentation Only Performance Schema with global and thread instrumentation References Continue reading