FAQ's, intros and memorable discussions in the Performance and Tuning Forum

Question

Welcome to the SDN ABAP Performance and Tuning Forum!
In addition to release dependent information avalaible by:
- pressing the F1 key on an ABAP statement,
- or searching for them in transaction ABAPDOCU,
- using the [SDN ABAP Development Forum Search|https://www.sdn.sap.com/irj/sdn/directforumsearch?threadid=&q=&objid=c42&daterange=all&numresults=15&rankby=10001],
- the information accessible via the [SDN ABAP Main Wiki|https://wiki.sdn.sap.com/wiki/display/ABAP],
- the [SAP Service Marketplace|http://service.sap.com] and see [SAP Note 192194|https://service.sap.com/sap/support/notes/192194] for search tips,
- the 3 part [How to write guru ABAP code series|https://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/f2dac69e-0e01-0010-e2b6-81c1e8e5ce50] ... (use the search to easily find the other 2 documents...)
... this "sticky post" lists some threads from the ABAP forums as:
- An introduction for new members / visitors on topics discussed in threads,
- An introduction to how the forums are used and the quality expected,
- A collection of some threads which provided usefull answers to questions which are frequently asked, and,
- A collection of some memorable threads if you feel like reading some ABAP related material.
The listed threads will be enhanced from time to time. Please feel welcome to post to [this thread|Suggestions thread for ABAP FAQ sticky; to suggest any additional inclusions.
Note: When asking a question in the forum, please also provide sufficient information such that the question can be answered usefully, do not repeat interview-type questions, and once closed please indicate which solution was usefull - to help others who search for it.

Answer 1

ABAP Performance and Tuning
Read Performance   => Gurus take over the discussion from Guests caught cheating the points-system.
SELECT INTO TABLE => Initial questions often result in interesting follow-up discussions.
Inner Joins vs For all Entries. => Including infos about system parameters for performance optimization.
Inner Join Vs Database view Vs for all entries => Usefull literature recommended by performance guru YukonKid.
Inner Joins vs For All Entries - performance query => Performance legends unplugged... read the blogs as well.
The ABAP Runtime Trace (SE30) - Quick and Easy => New tricks in old tools. See other blogs by the same author as well.
Skip scan used instead of (better?) range scan => Insider information on how index access works.
DELETE WHERE sample case that i would like to share with you => Experts discussing the deletion of data from internal tables.
Impact of Order of fields in Secondary  index => Also discussing order of fields in WHERE-clause
"SELECT SINGLE" vs. "SELECT UP TO 1 ROWS" => Better for performance or semantics?
into corresponding fields of table VERSUS into table => detailed discussion incl. runtime measurements
Indexes making program run slower... => Everything you ever wanted to know about Oracle indexes.
New! Mass reading standard texts (STXH, STXL) => avoiding single calls to READ_TEXT for time-critical processes
New! Next Generation ABAP Runtime Analysis (SAT) => detailed introduction to the successor of SE30
New! Points to note when using FOR ALL ENTRIES => detailed blog on the pitfall(s) a developer might face when using FAE
New! Performance: What is the best way to check if a record exist on a table ? => Hermann's tips on checking existence of a record in a table
Message was edited by: Oxana Noa Zubarev