How To Use An Informix System With A Computer System (For A Dba)

Transcription

1 Open Source and Third Party Software Supporting Informix Ognjen Orel University Computing Centre, University of Zagreb, Croatia, EU 1

2 Who am I? Project manager, DBA, developer 16 years Informix experience IBM Champion Working for University Of Zagreb s Computing Centre Academic Information Systems division Design, development and maintenance of several nation-wide information systems covering higher education and science in the country 2

3 How Cool is Informix? Greatest database on Earth Zero-admin, just set it up Executes queries, handles security, replication, cooks, cleans around the house, 3

4 Ok, but really? There are many ways Informix could be used OLTP OLAP Standalone server replication Business logic inside the DB Business logic in the apps User s roles and permissions hanled by the DB handled in the apps 4

5 Ok, but really? There is a need for different additional software to accommodate various day-to-day needs I will show some of it, from a perspecitve of information system development and maintenance 5

6 Information System Consists of Single or multiple databases (maybe different DBMSs) Number of end-user apps desktop, web, mobile Number of back-end apps Set of business rules Sets of users with different roles Support teams, helpdesk, developers, admins 6

7 Additional software DBA stuff Monitoring Alerting Maintenance Management Developer stuff SQL/SPL Tools ORM Application Development Frameworks Testing Project Management Tools (Project management, issue trackers, CMSs, Wikis ) 7

8 DBA Stuff Monitoring Alerting Maintenance Management 8

9 One for you Q: How do you know when your instance is down? 9

10 One for you Q: How do you know when your instance is down? What/who sends the alert? Software User 10

11 Shell scripts & cron Simple monitoring and alerting Collect various data of interest Point-in-time data: Server load, number of users, ready threads etc Aggregated data: daily checkpoints stats, tx stats, etc (e.g. from sysadmin database) Easy to send alerts and reports 11

12 SQL API cron Simple monitoring and maybe alerting Collect various data of interest directly from database insert into sysadmin:ph_task values (...) Or configure it through OpenAdmin Tool 12

13 Command line utilities Plenty of those in the IIUG Software Repository utils[2,3,4]_ak by Art Kagel 13

14 BusyBee Developed by Eric Herber long time ago Now open-sourced and hosted on SourceForge Python based scripts for monitoring various parameters Online status, chunk status, extents, log entries, memory, cache, 14

15 BusyBee Configurable Tresholds for sending different kinds of alerts Sending alerts 15

16 Zabbix Open source monitoring software Supports various types of agents to collect data from Monitor hardware Servers, UPSs, network appliances, A/Cs ) Monitor software OSs, web servers, databases, applications, 16

17 Zabbix Use with Informix in two ways: Store monitoring data Monitor Informix instance (template by Cesar I. Martins) 17

18 Zabbix 18

19 OpenAdmin Tool Should be a household name for every DBA Provides monitoring and maintenance of multiple instances Health advisor 19

20 One for you Q: when you migrate to a newer version (i.e. upgrade your instance), what do you do with your onconfig file? Use it as it is with a new version? Make a new one based on new onconfig.std? 20

21 migrateonconfig You want your onconfig to match the current Informix version, instead of adding a bunch of new parameters to the end Will produce a new file with.std structure and comments, but with original values and additional comments Uses Groovy language 21

22 migrateonconfig groovy migrateonconfig.groovy \ -i $INFORMIXDIR/etc/$ONCONFIG \ -s /opt/ibm/informix1210fc5/etc/onconfig.std 22

23 Other management and monitoring products There are some great Informix based products for DBAs and developers, with commercial and free licenses Not permitted to advertize here 23

24 Developer Tools SQL/SPL Tools ORM Application Development Frameworks Testing Project Management Tools 24

25 Another one for you Q: How do you execute SQL queries 25

26 The (good) old SQL Editor 26

27 SQL Editor Developed by Informix in the 1990 s Pros: Small footprint Keyboard-centric Execute only a portion of the code in editor 27

28 SQL Editor Cons Outdated Only for Windows Single level undo 28

29 IBM Data Studio Based on Eclipse IDE Heavy footprint Complicated for simple use-cases 29

30 Some other SQL tools Plenty to choose from Some are integrated in IDEs Some are too smart Some could only be used on Windows 30

31 ifmx-sql-editor An improved copy of original SQL Editor Wrote it in Groovy Light client Keyboard centric, same shortcuts Multilevel undo/redo Syntax highlighting 31

32 ifmx-sql-editor 32

33 ifmx-sql-editor 33

34 ifmx-sql-editor Runs on JVM Runs on every OS that supports Java Download files and execute main jar ifmx.wordpress.com/software-and-tools/ 34

35 Object-Relational Mapping (ORM) Matching object-oriented concepts to a relational model Data types Structure differences Transaction handling 35

36 Java Object-Relational Mapping Frameworks Hibernate ( MyBatis ( Java Database Objects (JDO) ( Java Persistence API (JPA) 36

37 Application Frameworks Fundamental tools for enterprise class applications Covering the whole development process or just a part of it Spring Framework ( Struts ( GWT ( 37

38 RIA Development Frameworks RIA = Rich Internet Application Considering CRUD based applications Good RIA Development Framework Works with various RDBMSs Takes care of ORM Simplifies client-server communication Provides full featured and responsive web components 38

39 RIA Development Frameworks OpenXava ( Vaadin ( SmartGWT ( 39

40 SmartGWT Uses GWT (Google Web Toolkit) as a front-end components Encapsulates and extends GWT components in Java All client-server interaction (in the code) done via data source definitions (no SQL needed) Did not support Informix until recently 40

41 Testing the Code Unit testing with JUnit Test Java classes and methods.. and SQL/SPL code Run within continuous integration tool or by hand A separate, prepared database for these tests Each test rollbacks the transaction at the end 41

42 Testing the Code A simple test for a stored public void izvanredni() throws SQLException { SmallintField siftemeljfin = new SmallintField( databasetoolkit ); DbStatement.executeSelectIntoAndRelease( "execute procedure izracunp( )", new WrapperField[]{sifTemeljFin}, databasetoolkit, connection); } assertequals(true, siftemeljfin.isnull()); 42

43 And another one for you Q: Do you know how much torture can your database engine / db server stand? Concurent queries Users performing daily work Users performing complex queries How much do they wait for an answer? 43

44 Stress Tests Find out how much torture can your database stand Apache JMeter is a great tool for stress-testing 44

45 Stress Tests Idea: Prepare a separate database for stress test (or better, a separate environment) Back it up Prepare enough data that tests can use (csv files) Run the tests from one or more computers/servers Restore the database 45

46 Stress Tests ifmx.wordpress.com/2011/12/29/database-stress-testing/ 46

47 Project Management Tools Minimum set of features required Workflow tracking Bug tracking Reporting Wiki Interesting to us because of the back-end database Some support/could support Informix 47

48 Issue-tracking software Should provide workflow management and reporting Bugzilla Teamwork YouTrack JIRA Those built in Java upon Hibernate framework could use Informix 48

49 Wikis Should provide flexible interface, ease of collaboration, permissions, MediaWiki XWiki Confluence Those built in Java upon Hibernate framework could use Informix 49

50 Instead of a conclusion The acceptance of the DB depends, among other things, on the availability of the tools and the amount of the software supporting it We all want Informix to grow That means more people need to use it 50

51 What can we, as a community, do? Share the knowledge Share our code Scripts, tools, software, No matter how small or insignificant, there is always a novice out there who ll appreciate it Participate in other open-source projects in order to make them Informix-friendly 51

52 Questions? Or comments 52