More resources, same root cause
Why upgrading CPU, RAM or IOPS rarely solves a mission-critical database slowdown — and what to check before signing the purchase order.
Incident-Response
4 tagged articles
Technical Leadership & Projects
MySQL
The 8:40 AM phone call: recovering a Galera Cluster when nodes fall one after another
A Galera 3-node cluster loses quorum during a live incident. Diagnosis, emergency bootstrap, and recovery procedure guided over the phone — with the runbook.
MySQL
Swap at 100% on InnoDB Cluster: when join_buffer_size multiplies the problem
A MySQL InnoDB Cluster grinding to a halt due to join_buffer_size set to 2 GB per thread. Diagnosis, rolling restart, and the math behind per-thread buffers.
Oracle
ORA-00205 at three in the morning: understanding Oracle critical files before you need to
Step-by-step diagnosis of ORA-00205 during a night emergency: MOUNT phase, control file, SPFILE, redo log. A practical method for on-call Oracle DBAs.