Last Updated: October 2026 · Tested On: Oracle AI Database 26ai Enterprise Edition Release 23.26.4.1.0 on OCI Base Database Service · Lab: PDB CDBDEV, schema DDVUSR Sound familiar? The application team switched embedding models on Friday evening. The Oracle VECTOR data type column was declared VECTOR(384, FLOAT32) six months ago, the new model emits 768 Read more about Oracle VECTOR Data Type: Storage, Dimensions, Metrics[…]
Sound familiar? The table is still there. DESC works. SELECT COUNT(*) works. But the 40-minute report died halfway through with ORA-08103 object no longer exists, and the application team wants to know who dropped their table. Usually nobody dropped it. The table was replaced underneath the query. All Queries and their output is generated on Read more about ORA-08103 Object No Longer Exists: Find the DDL Culprit[…]
A junior DBA on my team asked me last week what she should be studying next. My honest answer surprised her: not another indexing course. Agent governance — the new discipline the Oracle agentic AI database shift just made unavoidable. That’s not a sentence I expected to say two years ago. But Oracle’s agentic AI Read more about Oracle Just Changed the Job Description of a DBA — Here’s What Actually Breaks First in Production[…]
In Post -2 of this series, We had a vector search query running clean in development — ten milliseconds, HNSW index in the plan, results looking right. The moment the same query hit a table with eight million rows in staging, response time jumped to forty seconds. The execution plan had quietly switched to TABLE Read more about Vector Indexes in Oracle AI Database 26ai — How HNSW and IVF Work Under the Hood[…]