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

1. What’s new in Postgres Plus
Advanced Server 9.3?
Craig Silveira
Director, Product management
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2. Postgres Plus: A Super-Set of Features
Synchronized with and contributing to the PostgreSQL community
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3. Core PostgreSQL New Features/
Improvements
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4. PostgreSQL 9.3 Performance!
• pg_upgrade parallel process enhancements
pg_upgrade performance
seconds vs number of tables
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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
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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
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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;!
!
!
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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
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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
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10. PPAS New Features
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11. Advanced Server 9.3 Oracle Compatibility!
• Package Support for:
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−
−
−
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
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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
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13. Fast Pruning Enhancement!
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14. Scale to Larger # of Partitions!
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15. EDB Failover Manager
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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
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17. Failover Manager Architecture
Agent
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Agent
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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
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19. Postgres Enterprise Manager 4.0
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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
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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!
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22. Summary
• 9.3 New Features include significant enhancements in:
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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
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