Oracle OpenWorld San Pablo 2012

1. Database-resident JVM
What, Where, How is it use and his potential

2. www.scotas.com
Agenda
– Database resident JVM
– Session Management
– Memory Management
– Security
– Oracle Commitment to Java in the Database
– What we heard at OOW San Francisco about 12c
– Case Study
●
Near Real Time Full Text Indexing
●
Analytic Tool for Enterprise Server Logs

3. Database resident JVM
●
Available since Oracle 8i
●
Architecture
●
Robustness
●
Class sharing
●
Memory Management
●
Scalability
●
Performance
www.scotas.com

4. Oracle JVM versus Sun’s JDK
Sun’s JDK VM
●
Thread Based
●
Sharing across Threads
●
Limited Scalability
●
Classes in file system
●
Resolve classes with
“Classpath”
●
JIT
●
Preemptive multi-threading
●
Limited Robustness (process
failure)
OracleJVM
●
Database Session Model
●
Session Isolation
●
Unlimited Scalability
●
Classes in database
●
Resolve classes with
“Resolver Spec”
●
JIT (11g and up)
●
Non-Preemptive multi-
threading
●
Does not crash as a whole
www.scotas.com

5. Database Sessions Imposed on Java
Within the context of a
session, the client
performs the following:
1)Connects to the database
and opens a session.
●
Runs Java within the
database. This is referred to
as a call
●
Continues to work within the
session, performing as
many calls as required
●
Ends the session
www.scotas.com

6. Oracle JVM Class Sharing
…
Shared JVM System Classes
Shared User Application Classes
Oracle
Database
Virtual JVM
Instance
Virtual JVM
Instance
Session
System
Statics
User
Statics
Session
System
Statics
User
Statics
Session
System
Statics
User
Statics
…
www.scotas.com

7. Oracle JVM Memory Areas
●
Java Pool
Used by the Java class loader to allocates space for bytecodes and other read-
only class metadata; also Java states that are migrated from the Session space
at the end of call.
●
Session Space
Used for preserving the state of system objects, user objects, and metadata
used by the Java runtime; also used for end of call migration
●
New Space
Default memory area for allocating almost all Java objects, except large objects
●
Old Space
Used for holding long-lived or large objects (i.e., larger than 1-K Bytes) for the
duration of a call.
●
Run Space
Used for holding system objects (e.g., classloader objects) allocated for the
duration of a call.
●
Stack Space
Used to allocate system objects used by the interpreter
www.scotas.com

8. OracleJVM Security
Strong Security combining database
security mechanisms with Java security
mechanisms
●
User authentication
●
Database-schema security
●
Login-user and effective-user security
●
Class resolution security
●
Java 2 security
www.scotas.com

9. Oracle’s Commitment to OJVM
●
Used by a significant percentage of database customers
●
Used by Oracle Components
– InterMedia
– Spatial
– Text
– XQuery (XMLDB)
– WareHouse Builder
– CDC (Change Data Capture)
– ORE (Oracle R Enterprise – database resident)
– ODM (Oracle Data Mining analytics functions)
●
12c Enhancements
www.scotas.com

10. ●
Many among Fortune 500 companies
●
Some examples from
“Java in the Oracle Database @ Work – Customer Case Studies”
●
And for sure Scotas & Cima
Who is Using OJVM
www.scotas.com

11. Java in the Database: What For
www.scotas.com
●
Trigger-based Notification System
using RMI
●
Secure Credit-Card Processing using
JSSE
●
Custom Alert applications that
monitor business data
●
Sending emails with attachment
from within the database
●
Produce PDF files from Result Set
●
Execute external OS commands and
external procedures
●
Implement Md5 CRC
●
Publish Repository Content to Portal
●
Portable Logistic Applications
●
Implement Parsers for various File
Formats (txt, zip, xml, binary)
●
Implement Image Transformation
and Format Conversion (GIF, PNG,
JPEG, etc)
●
Implement database-resident
Content Management System
●
HTTP Call-Out
●
JDBC Call-Out
●
RMI Call-Out to SAP
●
Web Services Call-Out
●
Messaging across Tiers
●
RESTful Database Web Services
●
Near Real Time Full Text Search

12. According to OOW SF presentation
●
JDK interchangeable at any time (Perl script)
●
Support for latest JDK
– 1.6 default
– 1.7
●
JNDI support
●
Logging support
●
In-database Hadoop (Map-Reduce)
●
Security enhancements
●
Fast switch from SQL-OJVM calls
www.scotas.com

13. Case Study
www.scotas.com
Database resident JVM
Client Example
Scotas Near Real Time Full Text Searching

14. Scotas OLS
www.scotas.com
●
An Embedded version of Solr Framework running inside Oracle OracleJVM
●
42 new Java Classes and several new PLSQL Object Types
●
Two new domain index for Oracle Databases using Data Cartridge API (ODCI)
●
A new Store implementation for Lucene (OJVMDirectory) which replaces a traditional
filesystem by Secure BLOB
●
Four new SQL operators scontains(), sscore(), smlt(), shighlight() and poweful
text analysis functionalities
●
An orthogonal/up-to-date Solr solution for any programming language, especially
Java, Ruby, Python, PHP and .Net, currently latest production version – 4.0.0.
●
Available to any Oracle product such as BI, Apex, ODM
create index esl_events_sidx on esl_events(message) indextype is Lucene.SolrIndex
parameters('SyncMode:Deferred;MltColumn:text;HighlightColumn:title;DefaultColumn:text;Co
mmitOnSync:true;ExtraTabs:ESL.esl_causes
c;WhereCondition:L$MT.event_id=c.event_id(+);ExtraCols:.....') local parallel 2;
select /*+ DOMAIN_INDEX_SORT */ sscore(1),shighlight(1),message from
esl_events where scontains(message,'severity_s:(ERROR INFO) AND
springframework',1)>0 and gen_day between 26 and 27;

15. What the NRT means?
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16. OLS Architecture
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17. Oracle Integrated Information Architecture Capabilities - Scotas OLS Integration
www.scotas.com
Management,Security,
Governance
AcquireData
UnstructuredSemi-structuredStructured
Machine
Generated
Social Media
Text, Image,
Video, Audio
Transactions
Master &
Reference
Organize Analyze Decide
Reporting &
Dashboards
Alerting
EPM - BI
Applications
Advanced
Analytics
Visual
Discovery
Big Data
Cluster
Specialized
Hardware
High Speed
Network
RDBMS
Cluster
In Memory
Analytics
ETL/ELT
ChangeDC
Real-Time
Message-
Based
Hadoop
MapReduce
In-Database
Analytics
Source: Oracle Information Architecture: An Architect’s Guide to Big Data
An Oracle White Paper in Enterprise Architecture, March 2012
Figure 3: Oracle Integrated Information Architecture Capabilities
DBMS
(OLTP)
NoSQL
ODS
HDFS
Warehouse
Streaming
CEP Engine
Files
Scotas Search

18. • Product comparison
SCOTAS
OLS
Oracle
Text
Solr Lucene
Real Time  
Scalability  
Performance  
Security  
Integration  
Flexible and
Powerful
features
 
Bringing the best of both worlds
www.scotas.com

19. Thank
You!
www.scotas.com | info@scotas.com | +1 (650) 704-7915 | 440 North Wolfe Road, Sunnyvale, CA 94085