Oracle Application Express fast = true

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2 Oracle Application Express fast = true Joel R. Kallman Director, Software Development Oracle Application Express, Server Technologies Division November 19, 2014

3 APEX Open Mic Night 2030 in Istanbul Demonstrations Questions and Answers! 3

4 Safe Harbor Statement The following is intended to outline our general product direction. It is intended for information purposes only, and may not be incorporated into any contract. It is not a commitment to deliver any material, code, or functionality, and should not be relied upon in making purchasing decisions. The development, release, and timing of any features or functionality described for Oracle s products remains at the sole discretion of Oracle. 4

5 Brief Introduction Joel R. Kallman Director of Software Development, Database Server Technologies Division Responsible for all product management and software development of Oracle Application Express 18 year Oracle employee Co- creator of Oracle Application Express Actively developing Oracle Application Express since its creation in 5

6 Where in the world is Ohio? 6

7 When the phone rings on Saturday, at

8 ORCL apex.oraclecorp.com, apex.oracle.com Partners with Product Development IT Petri dish for Oracle Application Express 8

9 Where is the fast=true setting? 9

10 A Tale of Two Customers 10

11 A Tale of Two Customers Run Hundreds of Applications for Thousands of Users Severe Scalability Issues Numerous Data Security Issues Wild, Wild West Minimal Understanding of APEX Minimal Understanding of Oracle Run Hundreds of Applications for Thousands of Users No Scalability Issues No Data Security Issues Formal Processes Deep Understanding of APEX Deep Understanding of Oracle 11

12 Hier ist alles super! 12

13 #1 Consistent Workspace IDs 13

14 Consistent Workspace IDs Benefits Easily replicate applications and other components between APEX instances Easily use SQL*Plus to install / upgrade APEX applications Facilitate import of pages 14

15 Consistent Workspace IDs How? Export / Import Workspace From Workspace Administration From Instance Administration Using APEXExport Manually specify ID during workspace creation! select workspace, workspace_id from apex_workspaces 15

16 #2 Consistent Application IDs 16

17 Consistent Application IDs Benefits Easily replicate applications and other components between APEX instances Easily use SQL*Plus to install / upgrade APEX applications Facilitate import of pages Less work for APEX when replacing (upgrading) applications 17

18 Consistent Application IDs How? In all environments, immediately propagate placeholder applications 18

19 #3 Invest in Oracle Skills Know the features of the Oracle Database and how to exploit them 19

20 Invest in Oracle Skills Benefits Applications are fast End users are happy Management is happy DBAs are happy Your resume is improved 20

21 Invest in Oracle Skills How? Take a class Buy a book and practice on XE (Express Edition, the free version of the Oracle database) Visit the Oracle Learning Library 21

22 #4 Know AWR Active Workload Repository 22

23 Know AWR Benefits Precisely determine what is going on inside the Oracle Database Quickly determine why something is slow 23

24 Know AWR How? Have your DBA produce a report With permission, write your own:!! dbms_workload_repository.awr_global_report_html * May require Oracle Enterprise Manager Diagnostic Pack 24

25 #5 Understand how to Tune SQL 25

26 Understand how to Tune SQL Benefits Applications are faster Reduces costs 26

27 Understand how to Tune SQL How? Use APEX SQL Commands Explain Plan Use SQL*Plus SET AUTOTRACE ON EXPLAIN STATISTICS Use Oracle SQL Developer (free!) Use TKPROF and tracing Use Trace Analyzer 27

28 Understand how to tune SQL Live SQL 28

29 #6 Monitor APEX Activity 29

30 Monitor APEX Activity Benefits Easily identify problem applications and pages Ensure overall health of the system 30

31 Monitor APEX Activity How? Workspace Administration Monitor Activity Instance Administration Monitor Activity Database Views: APEX_WORKSPACE_LOG_SUMMARY APEX_WORKSPACE_LOG_ARCHIVE APEX_WORKSPACE_ACTIVITY_LOG 31

32 #7 Operate Like a Software Provider 32

33 Operate Like a Software Provider Benefits Established processes in place, can react quickly Easy to establish a cadence for updates 33

34 Operate Like a Software Provider How? Use source code control (Subversion, GIT) Establish a nightly build process (Jenkins, Hudson) Know how to write patch scripts for your application Automate installation testing of your application patches 34

35 #8 Self- Service Recovery 35

36 Self- Service Recovery Benefits Can quickly recover from errors No need to bother anyone nor file a ticket for IT 36

37 Self- Service Recovery How? Employ Flashback Query select * from demo_customers as of timestamp systimestamp - interval '1' hour! Use Recycle Bin Must be enabled by DBA, can chew up space Use Packaged Application: APEX Application Archive 37

38 #9 Maximize Declarative 38

39 Maximize Declarative Benefits Faster to develop Easier to maintain Less contention on the database Reduces risk of upgrade issues 39

40 Maximize Declarative How? Always do declarative when possible Use custom JavaScript only when you must Never rely upon undocumented APIs, variables, etc. Store as much PL/SQL in the database as possible 40

41 #10 Understand Your System 41

42 Understand Your System Benefits Clear view of who is doing what 42

43 Understand Your System How? Review AWR Identify all applications and users of your system Review database jobs 43

44 #11 Be a Good Sharer 44

45 Be a Good Sharer Benefits Promotes reuse of code Promotes reuse of Application Express components Consistent user interface Easier to maintain 45

46 Be a Good Sharer How? The minute you copy code a second time, stop! Make use of shared components and subscriptions in APEX Establish a repository application Not shipped or run Only used to maintain master copy of shared components 46

47 #12 Have a Standard 47

48 Have a Standard Benefits Consistent user experience Easier to maintain 48

49 Have a Standard How? Author user interface guidelines Author naming conventions Author coding standards Examine code of the APEX Packaged Applications Use packaged application: Standards Tracker standards- tracker/ 49

50 #13 Everything Else 50

51 Minimize Use of Database Links Database links can be chatty Strongly recommend materialized views or refreshable tables Only use database links when no other option available apex_util.close_open_db_links configure in ORDS <entry key="procedure.postprocess">apex_util.close_open_db_links</entry> <entry key="procedure.preprocess">apex_util.close_open_db_links</entry> Sniper database job 51

52 Partition APEX Tables Typically only relevant for multi- node RAC clusters Will manifest itself in AWR as GCS / GES wait events (Global Cache Service, Global Enqueue Service) Only when necessary, partition the hot tables of APEX Used in conjunction with DB instance and Web- tier affinity apex/utilities/apxpart.sql 52

53 Get a Plan! Understand Database Resource Manager Don t use the Sample Demonstration plan as your production plan Sample plan for APEX on my blog: joelkallman.blogspot.com Can assign a workspace to a Resource Consumer Group in APEX QOS instance settings in APEX

54 Remove APEX from the Container APEX is shipped in the container of Oracle Database 12c Multitenant by default Remove APEX from the container Manage each PDB individually 54

55 Lock Down that DB! When consolidating on APEX, monitor the grants on objects Oracle database auditing DDL Triggers * Database Vault 55

56 Conclusion You are never done There is no such thing as an application being too fast Invest in Oracle skills 56

57 Oracle Application Express fast = true! 57

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