1. Copyright © 2013, Oracle and/or its affiliates. All rights reserved. 1

2. What’s New for Java in Oracle Database 12c Kuassi Mensah Director Product Management

3. Copyright © 2013, Oracle and/or its affiliates. All rights reserved. 3 The following is intended to outline our general product direction. It is intended for information purposes only, and may not be incorporated into any contract. It is not a commitment to deliver any material, code, or functionality, and should not be relied upon in making purchasing decisions. The development, release, and timing of any features or functionality described for Oracle’s products remains at the sole discretion of Oracle.

4. Copyright © 2013, Oracle and/or its affiliates. All rights reserved. 4 My Next Sessions  Oracle In-Database MapReduce (Hands-on lab) – 7/24/13, 17:15 – 18:15, Room 411/412  Maximun Application Availability with Oracle database 12c – 7/25/13, 09:00 – 10:00, Room 429  Oracle In-Database MapReduce: When Hadoop Meets Exadata – 7/25/13, 12:00 – 13:00, Room 431

5. Copyright © 2013, Oracle and/or its affiliates. All rights reserved. 5 Agenda Support for Java Standards  Multitenant architecture & New SQL Data Types  Java Performance & Scalability  Java Availability  Global Data Services for Java  Security & Deprecated/Desupported Features

6. Copyright © 2013, Oracle and/or its affiliates. All rights reserved. 6 Support for JDBC 4.1  Java SE 7, ojdbc7.jar, ucp.jar  setClientInfo(), and getClientInfo()  getObject()  try with resources  New methods in java.sql.Connection JDBC/UCP Support for JDK 7 and JDBC 4.1

7. Copyright © 2013, Oracle and/or its affiliates. All rights reserved. 7 Java in the Database  Multiple Java SE: JDK 6 & JDK 7; JNDI, Logging  Performance: Stored procedures & functions  Reuse skills and libraries – Integrate Lucene, Solr, Hadoop with the database – Image Transformation and Conversion (GIF, PNG, JPEG) – Parsers for various File Formats (txt, zip, xml, binary)  Calling-Out External Systems – HTTP Call-Out, JDBC Call-Out, Web Services Call-Out

8. Copyright © 2013, Oracle and/or its affiliates. All rights reserved. 8 Java in the Database Install JDK 7 at Database Creation Time  Run the following Perl script perl $ORACLE_HOME/javavm/install/update_javavm_binaries.pl 7  Relink Oracle on Non-Windows platforms cd $ORACLE_HOME/rdbms/lib make -f ins_rdbms.mk ioracle  Proceed with database creation steps

9. Copyright © 2013, Oracle and/or its affiliates. All rights reserved. 9 Agenda  Java Standards Multitenant architecture and New SQL Data Types  Java Performance & Scalability  Java Availability  Global Data Services for Java  Security& Deprecated/Desupported Features

10. Copyright © 2013, Oracle and/or its affiliates. All rights reserved. 10 JDBC/UCP Support for Multitenant architecture  Transparent through Net Service  SET CONTAINER  Common pool across containers thru UCP connection labeling and callback

11. Copyright © 2013, Oracle and/or its affiliates. All rights reserved. 11  32K VARCHAR, NVARCHAR, and RAW  Invisible or Hidden Columns  Implicit Result Set  Auto-Increment Columns (IDENTITY columns)  PL/SQL Package Types as Parameter JDBC Support for New SQL Data Types

12. Copyright © 2013, Oracle and/or its affiliates. All rights reserved. 12  VARCHAR2, NVARCHAR2, and RAW increased from 4,000 to 32,767 bytes  Java applications no longer need to switch to large objects (LOBs) for data inferior to 32K in size  Indexes may be built on top of these columns  Pre-Requisites (DBA) – Set the COMPATIBLE initialization parameter to 12.0.0.0. – Set the MAX_STRING_SIZE initialization parameter to EXTENDED. – Run the rdbms/admin/utl32k.sql script. 32K VARCHAR NVARCHAR and RAW

13. Copyright © 2013, Oracle and/or its affiliates. All rights reserved. 13  Columns created with INVISIBLE SQL keyword  Invisible columns are not displayed during generic access such as a “SELECT * FROM table” or “DESCRIBE table”  JDBC furnishes isColumnInvisible() to check whether a column is invisible/hidden or not. OracleResultSetMetaData rsmd = (OracleResultSetMetaData)rset.getMetaData(); System.out.println("Visibility:" + rsmd.isColumnInvisible(2)); Invisible or Hidden Columns Ease of Upgrade

14. Copyright © 2013, Oracle and/or its affiliates. All rights reserved. 14  Problem to solve: migrate Java applications from third-party RDBMS that do not use RefCursor.  Implicit Results: retrieve the return of stored procedures (PL/SQL, Java) directly, using DBMS_SQL.RETURN_RESULT.  Example of Stored Procedure using dbms_sql.return_result() create or replace procedure p_imres as result sys_refcursor; begin open result for select * from tab; dbms_sql.return_result(result); end; Implicit Result Set

15. Copyright © 2013, Oracle and/or its affiliates. All rights reserved. 15  New Oracle JDBC methods getMoreResults() or getMoreResults(int) The int parameter that can have one of the following values: KEEP_CURRENT_RESULT, CLOSE_ALL_RESULTS, CLOSE_CURRENT_RESULT getResultSet(): iteratively retrieves each implicit result  The following foreign Java code will just work with Oracle CallableStatement cstmt = null; ResultSet rs = null; cstmt = conn.prepareCall(“{call p_imres()}”); cstmt.execute(); boolean resultsAvailable = cstmt.getMoreResults(); Implicit Result Set

16. Copyright © 2013, Oracle and/or its affiliates. All rights reserved. 16  Problem to Solve: Reuse applications, built on foreign RDBMS, that use auto-increment columns  The Oracle database 12c implements ANSI compliant automatically incrementing columns using the SQL keyword IDENTITY. CREATE TABLE t1 (c1 NUMBER GENERATED BY DEFAULT ON NULL AS IDENTITY, c2 VARCHAR2(10));  No new JDBC API needed JDBC Support for Auto-Increment Columns

17. Copyright © 2013, Oracle and/or its affiliates. All rights reserved. 17 PL/SQL Package Types as Parameter  Problem to Solve: Access PL/SQL types as Java arrays without creating PLSQL wrappers  Usage type name specified as. or.. 1) Create PLSQL types using %ROWTYPE CREATE OR REPLACE PACKAGE pack1 AS TYPE employee_rowtype_array IS A TABLE OF Employee%ROWTYPE; END; /

18. Copyright © 2013, Oracle and/or its affiliates. All rights reserved. 18 PL/SQL Package Types as Parameter 2) Obtain the rows as a java.sql.Array of java.sql.Struct CallableStatement cstmt = connection.prepareCall( “BEGIN SELECT * INTO :1 FROM EMPLOYEE; END;”); cstmt.registerOutParameter(1, OracleTypes.ARRAY, “PACK1.EMPLOYEE_ROWTYPE_ARRAY”); cstmt.execute(); Array employeeArray = cstmt.getArray(1); This feature makes easier to fetch query results as Java Array or Struct, thereby simplifying Object-Relational mapping.

19. Copyright © 2013, Oracle and/or its affiliates. All rights reserved. 19 Row Count per Array DML with JDBC  Java applications using Oracle JDBC drivers can now retrieve the number of rows affected by each iteration of an array DML statement (i.e., array INSERT, UPDATE, DELETE). … int rcount[] = stmt.executeBatch(); Long Awaited

20. Copyright © 2013, Oracle and/or its affiliates. All rights reserved. 20 Agenda  Support for Java Standards  Multitetant architecture and New SQL Data Types Java Performance & Scalability  Java Availability  Global Data Services for Java  Security & Deprecated/Desupported Features

21. Copyright © 2013, Oracle and/or its affiliates. All rights reserved. 21 New Performance and Scalability Features  New Memory Management  JDBC/UCP Support for Database Resident Connection Pool  Very Large Network Buffers (SDU) Java Applications Performance & Scalability

22. Copyright © 2013, Oracle and/or its affiliates. All rights reserved. 22 Extreme Scalability with DRCP Support Tens of Thousands of Concurrent Users POC: 5000 users; DRCP pool size of 100

23. Copyright © 2013, Oracle and/or its affiliates. All rights reserved. 23  To enable DRCP with JDBC, you must perform the following steps: – Pass a non-null and non-empty string value to the connection property oracle.jdbc.DRCPConnectionClass – Add POOLED qualifier to the URL in the short connection string Example: jdbc:oracle:thin:@//localhost:5221/orcl:POOLED – Add (SERVER=POOLED) in the long connection string or in TNSNAMES.ORA  New JDBC connection properties oracle.jdbc.DRCP.name and oracle.jdbc.DRCP.purity JDBC/UCP Support for DRCP

24. Copyright © 2013, Oracle and/or its affiliates. All rights reserved. 24  DRCP pools must be explicitly created, started and stopped by the DBA using the DBMS_CONNECTION_POOL package. sqlplus /nolog connect / as sysdba execute dbms_connection_pool.start_pool();... execute DBMS_CONNECTION_POOL.CONFIGURE_POOL (session_cached_cursors=>50);... execute dbms_connection_pool.stop_pool(); Configuring DRCP on RDBMS-Side

25. Copyright © 2013, Oracle and/or its affiliates. All rights reserved. 25 Very Large Network Buffers (SDU)  Controls SQL*Net packet size – Default: 8K – Max: 2MB (12c), 64K (11.2), 32K (pre-11.2)  Set in – sqlnet.ora: DEFAULT_SDU_SIZE – tnsnames.ora: SDU in address – Connect String  Larger SDU gives – Better Network throughput – Fewer system calls to send and receive data – Less CPU usage – system and user  Side-effect of larger SDU: Network buffers take up more memory Where to configure? Client : URL sqlnet.ora and/or tnsnames.ora or LDAP Server: sqlnet.ora

26. Copyright © 2013, Oracle and/or its affiliates. All rights reserved. 26 Agenda  Support for Java Standards & New SQL types  Java Support for Multitenant Pluggable Databases  Java Performance & Scalability Java Availability  Global Data Services for Java  Security & Deprecated/Desupported Features

27. Copyright © 2013, Oracle and/or its affiliates. All rights reserved. 27 Application Continuity for Java Upon Database Outage Four Problems Confront Applications 1. Hang 2. Errors & Connection Handling 3. Outcome of In-Flight Work 4. Resubmission of In-Flight Work More details in session “Maximum Application Availability” 7/25/13, 09:00 –10:00, Room 429 Problems to Solve

28. Copyright © 2013, Oracle and/or its affiliates. All rights reserved. 28 Application Continuity In Action Call 1 Application Application Proxy 1 Proxy 2 RAC Database Instance1 Instance2 Instance3 Call 2 Connection Replay Context Oracle JDBC Driver

29. Copyright © 2013, Oracle and/or its affiliates. All rights reserved. 29 Agenda  Support for Java Standards  Multitenant architecture and New SQL Data Types  Java Performance & Scalability  Java Availability Global Data Services for Java  Security & Deprecated & Desupported Features

30. Copyright © 2013, Oracle and/or its affiliates. All rights reserved. 30 Databases in Replicated Environments Challenges/ Requirements  No seamless way to efficiently use all the databases  No automated load balancing and fault tolerance Primary Active Standby GoldenGate

31. Copyright © 2013, Oracle and/or its affiliates. All rights reserved. 31 Global Data Services Extends RAC-style service failover, load balancing and manageability to a set of replicated databases Takes into account network latency, replication lag, and service placement policies Achieve higher availability, improved manageability and maximize performance Load Balancing and Service Failover for Replicated Databases

32. Copyright © 2013, Oracle and/or its affiliates. All rights reserved. 32 UCP Support for Global Data Services  Transparently supports existing Fast Connection Failover (FCF), Runtime Load Balancing (RLB), Database Affinity  Specify global service name and region in connect URL (DESCRIPTION= (ADDRESS_LIST= (LOAD_BALANCE=ON) (FAILOVER=ON) (ADDRESS=(GDS_protocol_address_information)) (ADDRESS=(GDS_protocol_address_information)) ) (CONNECT_DATA= (SERVICE_NAME=global_service_name) (REGION=region_name)))

33. Copyright © 2013, Oracle and/or its affiliates. All rights reserved. 33 Agenda  Support for Java Standards  Multitenant architecture and New SQL Data Types  Java Performance & Scalability  Java Availability  Global Data Services for Java Security & Deprecated/Desupported Features

34. Copyright © 2013, Oracle and/or its affiliates. All rights reserved. 34  JDBC now supports SHA-2 hashing algorithms: SHA-256, SHA-384, and SHA-512 prop.setProperty (OracleConnection.CONNECTION_PROPERTY_THIN_NET_CHECKSUM_TYPES, "( MD5, SHA1, SHA256, SHA384 or SHA512 )"); prop.setProperty (OracleConnection.CONNECTION_PROPERTY_THIN_NET_CHECKSUM_LEVEL, "REQUIRED"); Advanced Security Enhancements

35. Copyright © 2013, Oracle and/or its affiliates. All rights reserved. 35 Deprecated and de-supported features  Deprecated Features – Concrete types oracle.sql.CLOB, oracle.sql.BLOB, oracle.sql.BFILE oracle.sql.STRUCT, oracle.sql.ARRAY,oracle.sql.OPAQUE : use Java and Oracle interfaces – Oracle style batching: use Java Standard batching pstmt.setInt(1, 1234);pstmt.setString(2, “Product #1”); pstmt.addBatch(); int [] batchCount = pstmt.executeBatch(); – End to End metrics API: use Java standard setClientInfo()  Desupported Feature – JDK 5 is not supported in 12.1: JDK 6 and JDK 7 supported – Implicit Connection Cache: use UCP instead

36. Copyright © 2013, Oracle and/or its affiliates. All rights reserved. 36 Q & A

37. Copyright © 2013, Oracle and/or its affiliates. All rights reserved. 37

38. Copyright © 2013, Oracle and/or its affiliates. All rights reserved. 38