Scotas - Oracle Open World Sao Pablo
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The document discusses database-resident Java virtual machines (JVMs). It provides an overview of Oracle's database-resident JVM, how it differs from Sun's JVM, how it manages memory and classes differently. It also discusses how Oracle uses sessions to impose limits on Java usage, ensures security, and its commitment to and uses of database-resident JVM. It provides an example use case of Scotas' near real-time full text search implementation using database-resident JVM capabilities.
Scotas - Oracle Open World Sao Pablo
- 1. Database-resident JVM What, Where, How is it use and his potential
- 2. 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 www.scotas.com
- 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 OracleJVM ● Thread Based ● Database Session Model ● Sharing across Threads ● Session Isolation ● Limited Scalability ● Unlimited Scalability ● Classes in file system ● Classes in database ● Resolve classes with ● Resolve classes with “Classpath” “Resolver Spec” ● JIT ● JIT (11g and up) ● Preemptive multi-threading ● Non-Preemptive ● Limited Robustness (process multi-threading failure) ● 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 Oracle Database Shared User Application Classes Session Session Session Virtual JVM User User Virtual JVM Instance Statics User Statics Statics Instance System Statics … System Statics … System Statics Shared JVM System Classes 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. Who is Using OJVM ● Many among Fortune 500 companies ● Some examples from “Java in the Oracle Database @ Work – Customer Case Studies” ● And for sure Scotas & Cima www.scotas.com
- 11. Java in the Database: What For ● Trigger-based Notification System using ● Implement Parsers for various File RMI Formats (txt, zip, xml, binary) ● Secure Credit-Card Processing using JSSE ● Implement Image Transformation ● Custom Alert applications that monitor and Format Conversion (GIF, PNG, business data JPEG, etc) ● Sending emails with attachment from within the database ● Implement database-resident ● Produce PDF files from Result Set Content Management System ● Execute external OS commands and ● HTTP Call-Out external procedures ● JDBC Call-Out ● Implement Md5 CRC ● Publish Repository Content to Portal ● RMI Call-Out to SAP ● Portable Logistic Applications ● Web Services Call-Out ● Messaging across Tiers ● RESTful Database Web Services ● Near Real Time Full Text Search www.scotas.com
- 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 Database resident JVM Client Example Scotas Near Real Time Full Text Searching www.scotas.com
- 14. Scotas OLS ● 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; www.scotas.com
- 15. What the NRT means? www.scotas.com
- 16. OLS Architecture www.scotas.com
- 17. Oracle Integrated Information Architecture Capabilities - Scotas OLS Integration Data Acquire Organize Analyze Decide Structured Master & ETL/ELT Reference Reporting & ODS Dashboards DBMS (OLTP) ChangeDC Management, Security, Alerting Transactions Semi-structured EPM - BI Warehouse Real-Time Governance Files Applications Machine Generated Scotas Search Message- Streaming Social Media NoSQL Based CEP Engine Advanced Unstructured Analytics In-Database Text, Image, Hadoop HDFS Analytics Visual Video, Audio MapReduce Discovery Specialized Big Data High Speed RDBMS In Memory Hardware Cluster Network Cluster 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 www.scotas.com
- 18. • Product comparison Bringing the best of both worlds SCOTAS Oracle Solr Lucene OLS Text Real Time Scalability Performance Security Integration Flexible and Powerful features www.scotas.com
- 19. Thank You! www.scotas.com | [email protected] | +1 (650) 704-7915 | 440 North Wolfe Road, Sunnyvale, CA 94085