What's New in Postgres Plus Advanced Server 9.3
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Learn more about EnterpriseDB's Postgres Plus Advanced Server 9.3! Highlights of Postgres Plus Advanced Server 9.3 include: Major Partitioning Enhancements Materialized Views New RPM packages New EDB Failover Manager New capabilities in Postgres Enterprise Manager 4.0
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What's New in Postgres Plus Advanced Server 9.3
- 1. What’s new in Postgres Plus Advanced Server 9.3? Craig Silveira Director, Product management © 2013 EDB All rights reserved 8.1. 1
- 2. Postgres Plus: A Super-Set of Features Synchronized with and contributing to the PostgreSQL community © 2013 EDB All rights reserved 8.1. 2
- 3. Core PostgreSQL New Features/ Improvements © 2013 EDB All rights reserved 8.1. 3
- 4. PostgreSQL 9.3 Performance! • pg_upgrade parallel process enhancements pg_upgrade performance seconds vs number of tables © 2013 EDB All rights reserved 8.1. 4
- 5. PostgreSQL 9.3 Performance! • Optimize Referential Integrity Checks Involving NULLs − #1 deadlock issue in Postgres − UPDATEs that do not affect columns in foreign key now take new lock: NO KEY UPDATE lock so it doesn’t block − Foreign key checks use KEY SHARE lock which doesn’t block − Should greatly benefit systems with high concurrency • New lock parameter − Lock_timeout specifies how long to wait to acquire a lock © 2013 EDB All rights reserved 8.1. 5
- 6. PostgreSQL 9.3 Materialized Views! • A stored query result • Can be refreshed ad-hoc • For results that don't need to be completely up-to-date • Useful for reporting and warehousing data • Can be indexed like a regular table • Won’t thrash shared cache • Can reduce memory usage of server • #1 requested feature by Postgres Community © 2013 EDB All rights reserved 8.1. 6
- 7. Materialized View Example! CREATE TABLE survey_results (id serial PRIMARY KEY, survey_date date, survey_id int, survey_result_count int);! ! ! SELECT survey_date, count(survey_result_count) total_surveys,! round(avg(survey_result_count)) average_result,! min(survey_result_count) smallest_sample,! max(survey_result_count) largest_sample! FROM survey_results! GROUP BY survey_date! ORDER BY survey_date ASC;! ! CREATE MATERIALIZED VIEW survey_summary AS! SELECT survey_date, count(survey_result_count) total_surveys,! round(avg(survey_result_count)) average_result,! min(survey_result_count) smallest_sample,! max(survey_result_count) largest_sample! FROM survey_results! GROUP BY survey_date! ORDER BY survey_date ASC;! ! SELECT * FROM survey_summary;! ! ! © 2013 EDB All rights reserved 8.1. 7 Takes 7.5 seconds to execute on test machine on table with 20 million rows: 7552.442 ms Creating the view takes the same time to execute as the original query. Executing survey_summary query takes 4.62ms
- 8. PostgreSQL 9.3 Additional Features! • User Defined Background Worker Processes − Develop own processes using PostgreSQL as workload coordinator • Writeable Foreign Tables • Extend large object access to 4TB − The previous limit was 2GB • Auto updateable views – instead of triggers no longer needed • Event Triggers − Triggers fire on DDL actions • Continued development of NoSQL-like functionality − Additional constructor and extractor methods − JSON parsing support − Hstore/JSON casting functions • LATERAL Joins © 2013 EDB All rights reserved 8.1. 8
- 9. PostgreSQL 9.3 Additional Features con’t! • Enhanced Reliability and Availability − Fast failover − Ensures sub second failover thus providing ‘carrier grade’ availability − Streaming re-mastering − Makes reconfiguration of replicas after failover easier − Data page checksums − Helps identify bad disks that could lead to data corruption − PG_ISREADY utility − A new CLI utility to test whether a server is ready to accept connections − Ex pg_isready –h localhost –p 5432 − Pg_basebackup generates basic recovery file − Simplifies setup of standby database − Architecture independent streaming © 2013 EDB All rights reserved 8.1. 9
- 10. PPAS New Features © 2013 EDB All rights reserved 8.1. 10
- 11. Advanced Server 9.3 Oracle Compatibility! • Package Support for: − − − − − DBMS_RANDOM - random number generator DBMS_SCHEDULER – db job scheduler DBMS_CRYPTO – data encryption DBMS_LOCK.sleep DBMS_MVIEW – materialized view management • Package Support for: − UTL_HTTP – make url calls and return page contents − UTL_URL • Support for Functions: − REGEXP_INSTR − REGEXP_COUNT − REGEXP_SUBSTR • Custom constructor methods for Objects • Oracle compatible Materialized Views © 2013 EDB All rights reserved 8.1. 11
- 12. Advanced Server 9.3! • EDB Loader Enhancements − Perform updates as well as inserts − New bulk loading options – ROWS parameter − Environment variables for control • RPM distributions for Linux − Easier and more consistent installations and maintenance • Partitioning improvements − Fast pruning − Ability to address more partitions without performance degradation © 2013 EDB All rights reserved 8.1. 12
- 13. Fast Pruning Enhancement! © 2013 EDB All rights reserved 8.1. 13
- 14. Scale to Larger # of Partitions! © 2013 EDB All rights reserved 8.1. 14
- 15. EDB Failover Manager © 2013 EDB All rights reserved 8.1. 15
- 16. What is Failover Manager? • A solution to aid in the creation of highly available configurations of Postgres • Monitors the health of a Postgres HA configuration • Automates the failover process in the even of a failure • Used in conjunction with Streaming Replication © 2013 EDB All rights reserved 8.1. 16
- 17. Failover Manager Architecture Agent © 2013 EDB All rights reserved 8.1. Agent 17
- 18. Failover Manager Features • Automatic Failover from master to replica node • Configurable fencing operation − By default uses VIP − Parameter to specify alternative operation − Ex: reconfigure a load balancer • Manual failover configuration possible • Email notifications when cluster status changes • Witness node provides protection against ‘split brain’ scenarios • User configurable wait times • Built on PPCD/Jgroups technology − Proven functionality © 2013 EDB All rights reserved 8.1. 18
- 19. Postgres Enterprise Manager 4.0 © 2013 EDB All rights reserved 8.1. 19
- 20. Postgres Enterprise Manager (PEM) MONITOR MANAGE TUNE Only solution available combining all three tasks into one tool • Single management console allows easy visual control • Works for both PostgreSQL and Postgres Plus • Graphically start/stop, configure, define and manage storage, security, database objects © 2013 EDB All rights reserved 8.1. 20
- 21. Postgres Enterprise Manager 4.0 • New Features − Tuning Wizard − Logfile Alerting − Advanced Graphics − Auto-discovery of manageable servers by Agent installer − User Customizable Dashboards − Bulk Probe Tuning − Many other usability and performance enhancements − SQL/Protect support PEM 4.0 Webinar December 17th 1pm EST Register Now! © 2013 EDB All rights reserved 8.1. 21
- 22. Summary • 9.3 New Features include significant enhancements in: − − − − Performance High Availability Compatibility Ease of Development • Be sure to download Postgres Plus Advanced Server 9.3 and give it a try! http://www.enterprisedb.com/downloads © 2013 EDB All rights reserved 8.1. 22
- 23. © 2013 EDB All rights reserved 8.1. 23