Sap Bw 7.4 Practical Guide Pdf 28 -

Now go check your RSDD_HDB logs. You’ll probably find an index that hasn’t been rebuilt since 2018.

Have your own page 28 story from BW 7.4? Share your worst "HANA hangover" tale in the comments below.

But here is the practical kicker that most blogs missed: Even after conversion, your F table still contained REQUEST_GUID entries for every single data load. That’s right—every DTP request left a forensic trail inside the fact table. sap bw 7.4 practical guide pdf 28

The deep insight? The BIA INDEX (the legacy accelerator) was dead. In its place, HANA calculated views. But if you used standard MultiProviders or Infocubes (yes, people still used Infocubes in 7.4), you were forcing HANA to emulate a bitmap index.

Page 28 would have scolded you: "Index maintenance is not a monthly job. It is a post-load job." The practical guide’s 28th page probably had a flowchart. On one side: Advanced DSO . On the other: CompositeProvider . In the middle: Open ODS Views . Now go check your RSDD_HDB logs

Why? Because HANA’s optimizer relies on fresh statistics. If your stats were from the last system copy three months ago, HANA would generate a brilliant execution plan for a dataset that no longer existed. You’d see a query take 12 seconds that should take 200 milliseconds.

Why? Because the HANA calculation engine would try to union the Active table and the Change Log table for every single query. Over time, your "virtual" provider becomes slower than a standard InfoCube. You might be thinking, "BW 7.4 is out of mainstream maintenance. Why does this matter?" Share your worst "HANA hangover" tale in the comments below

Run transaction ST04 (DBACOCKPIT). Look for "High Wait Time on Locks." Then, run RSRT with the technical name of your slowest query. Turn on "HANA Execution Details."