Last week I’ve gotten a question on how storage indexes (SI) behave when the table for which the SI is holding data is changed. Based on logical reasoning, it can be two things: the SI is invalidated because the data it’s holding is changed, or the SI is updated to reflect the change. Think about this for yourself, and pick a choice. I would love to hear if you did choose the correct one.
First let’s do a step back and lay some groundwork first. The tests done in this blogpost are done on an actual Exadata (V2 hardware), with Oracle version 184.108.40.206.6 (meaning bundle patch 6). The Exadata “cellos” (Cell O/S) version is 220.127.116.11.1.140529.1 on both the compute nodes and the storage nodes.