SAP AS ABAP Administration · Database Layer & DB Administration

After an upgrade, several reports suddenly run far slower. Before blaming optimizer statistics, what should you check in DB02 first, and why?

Answer locked. Get the free KnowCard app to reveal it — plus spaced-repetition review so it actually sticks.

This is one card from the KnowCard library — thousands more across SAP, Linux, Python and more. In the app you get the answer, AI explanations, and cards that come back right before you would forget them. Free to start on iOS, Android or the web.

More in Database Layer & DB Administration

When sizing the ABAP table buffers you find two different parameters for the 'table buffer.' What do zcsa/table_buffer_area and rtbb/buffer_length each control?

The storage team says the database sits on RAID with disk mirroring, so daily backups seem redundant. Why is that reasoning dangerous?

Match the cadence: how often should you refresh optimizer statistics, check the database fill level, and verify database object consistency?

After restoring last night's full database backup, the DBA still applies the transaction logs before releasing the system. What do the logs add, and what makes them usable?

You can add application server instances to handle more users, but the team wants to scale the database the same way by splitting its instance. Why does that not work?

Before installing an SAP system on a particular RDBMS and operating system combination, how do you confirm SAP actually supports that pairing, and why can't you just assume it?

Start learning today

Free to start — download the app or use it in your browser.