Oracle Database 12c Release 2 - New Features On Oracle Database Exadata Express Cloud Service
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This document summarizes new features in Oracle Database 12c Release 2 running on Oracle Database Exadata Express Cloud Service. Key features include longer identifier names up to 128 bytes, native support for JSON, improved functions for data conversion errors and LISTAGG, online conversion of non-partitioned tables to partitioned tables, read-only partitions, and approximate query processing. The presentation provides demonstrations of several new features.
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Oracle Database 12c Release 2 - New Features On Oracle Database Exadata Express Cloud Service
- 1. Oracle Database 12c Release 2 New Features On Oracle Database Exadata Express Cloud Service Presented by: Alex Zaballa, Oracle DBA
- 2. Alex Zaballa http://alexzaballa.blogspot.com/ @alexzaballa208 and counting… https://www.linkedin.com/in/alexzaballa
- 3. Worked for 7 years in Brazil as an Oracle Developer. 2000 - 2007 Worked for 8 years in Angola as an Oracle DBA for the Ministry of Finance. 2007 - 2015
- 5. Database New Features Guide https://docs.oracle.com/cloud/latest/exadataex press-cloud/CSDBF/toc.htm Using Oracle Database Exadata Express Cloud Service https://docs.oracle.com/cloud/latest/exadataex press-cloud/CSDBP/toc.htm
- 6. http://www.oracle.com/us/products/database/ database-exadata-express-ds-3224599.pdf Oracle Database Exadata ExpressCloud Service
- 8. Oracle Database Public Cloud – 05/Nov/2016
- 9. 05/Nov/2016 Oracle® Database Online Documentation Library 12c Release 2 (12.2) http://docs.oracle.com/database/122/nav/porta l_booklist.htm
- 10. Oracle Database 12c Release 2 New Features On Oracle Database Cloud Service
- 11. Upgrade to 12.1.0.2 or wait for 12.2 ? CDB ou NON-CDB?
- 12. Oracle Database Release Status MOS Note:742060.1
- 16. Oracle Announces Beta Availability of Oracle Database 12c Release 2 - Oct 26, 2015 • PLUGGABLE DATABASES From 252 to 4096 • HOT CLONING Don’t need to put the source in read-only for cloning • SHARDING It’s like partitioning in a shared nothing database The data is split into multiple databases • In-Memory In-Memory column Store on Active Data Guard Heat Map • APPLICATION CONTAINER Pluggable Databases will share application objects • More isolation, resource manager will limit the memory in addition to CPU and I/O. • AWR will work on Active Data Guard Database: you can tune your reporting database
- 17. Longer Identifier Names • Starting with Oracle Database 12c Release 2 (12.2), the maximum length of identifier names for most types of database objects has been increased to 128 bytes.
- 18. DEMO
- 19. JSON OTN Article by Alex Zaballa http://www.oracle.com/technetwork/pt/articles /sql/json-oracle-database-12c-2378776- ptb.html
- 20. JSON • Oracle Database 12.1.0.2 has now native support for JSON. • “JSON (JavaScript Object Notation) is a lightweight data-interchange format. It is easy for humans to read and write. It is easy for machines to parse and generate.” Source: http://json.org/
- 21. JSON
- 22. JSON
- 23. JSON on 12.2.0.1 Generating JSON data: • JSON_ARRAY • JSON_OBJECT • JSON_ARRAYAGG • JSON_OBJECTAGG
- 24. JSON_ARRAY
- 25. JSON_OBJECT
- 27. DEMO
- 28. Data Conversion Errors • CAST() • TO_xxxx()
- 29. Enhanced CAST Function With Error Handling • CAST function is enhanced to return a user- specified value in the case of a conversion error instead of raising an error.
- 30. TO_xxxx() • DEFAULT ON CONVERSION ERROR
- 31. DEMO
- 32. VALIDATE_CONVERSION function • Determines whether expr can be converted to the specified data type. If expr can be successfully converted, then this function returns 1; otherwise, this function returns 0.
- 33. DEMO
- 34. LISTAGG improvements • LISTAGG aggregates the values of a column by concatenating them into a single string. New functionality has been added for managing situations where the length of the concatenated string is too long. • What to do when an overflow occurs: ON OVERFLOW ERROR (default) ON OVERFLOW TRUNCATE <delimiter>
- 36. DEMO
- 37. Changes in SQL*Plus Release 12.2 FAST Option SQL*Plus command-line option –F[ast] changes the values of the following default settings
- 38. Changes in SQL*Plus Release 12.2 Support for command history SET HIST[ORY] {ON | OFF | n} SHOW HISTORY
- 39. DEMO
- 40. Online Conversion of a Non Partitioned Table to a Partitioned Table Nonpartitioned tables can be converted to partitioned tables online. Indexes are maintained as part of this operation and can be partitioned as well. The conversion has no impact on the ongoing DML operations.
- 41. Online Conversion of a Non Partitioned Table to a Partitioned Table
- 42. Case insensitive
- 43. Online Table Move Nonpartitioned tables can be moved as an online operation without blocking any concurrent DML operations. A table move operation now also supports automatic index maintenance as part of the move.
- 46. Read-only partitions You can set tables, partitions, and subpartitions to read-only status to protect data from unintentional DML operations by any user or trigger.
- 48. Filtering Partition Operations (Maintenance) Filtering data for some maintenance operations.
- 49. Creating a Partitioned External Table You can create partitions for an external table:
- 50. Index Monitoring In 12.2, Index monitoring is now enabled by default. DBA_INDEX_USAGE displays cumulative statistics for each index. V$INDEX_USAGE_INFO keeps track of index usage since the last flush. A flush occurs every 15 minutes. http://blog.dbi-services.com/12cr2-new-index-usage-tracking/
- 51. FLASHBACK PLUGGABLE DATABASE PDB – local undo
- 52. FLASHBACK PLUGGABLE DATABASE PDB – local undo https://uhesse.com/2016/11/09/flashback-pluggable-database-now-available-in-oracle-12cr2/
- 53. FLASHBACK PLUGGABLE DATABASE PDB – local undo https://uhesse.com/2016/11/09/flashback-pluggable-database-now-available-in-oracle-12cr2/
- 54. PDB – characterset In 12.2 Multitenant supports consolidation of PDBs with diverse character sets. The requirement is that the CDB be configured with AL32UTF8, which is the super-set of all others and it is also the default characterset now. http://www.oracle.com/technetwork/database/multitenant/overview/multitenant-wp-12c- 2078248.pdf
- 55. PDB – resource management http://www.oracle.com/technetwork/database/multitenant/overview/multitenant-wp-12c- 2078248.pdf
- 56. PDB – hot clone In 12.2 we have PDB hot clone/refresh/relocate. Don’t need to put the source in read-only for cloning, can refresh a clone, can relocate a PDB to another CDB online
- 58. Oracle Database Vault Simulation Mode Protection Oracle Database Vault simulation mode protection allows customers to test their Oracle Database Vault realms and command rules protections using soft enforcement.
- 59. Approximate Query Processing Approximate query processing obtains approximate results with negligible deviation from the exact result while saving processing resources and dramatically increasing the processing of resources.
- 62. Approximate Query Processing You can utilize the Approximate functions without changing code. The initialization parameters are: • approx_for_aggregation • approx_for_count_distinct • approx_for_percentile
- 63. Approximate Query Processing alter session set approx_for_count_distinct = 'TRUE';
- 66. Thank You Slides Available: http://www.slideshare.net/