oracle database 12c release 2

10 Dec oracle database 12c release 2

This release introduces new SQL commands to encrypt tablespace files in place with no storage overhead. Oracle ACFS snapshot-based replication uses SSH to transmit the encoded snapshot clone stream to a standby site. This feature performs initial cryptographic migration for TDE tablespace encryption on the tablespace data in the background so that the tablespace can continue servicing SQL statements that insert, delete, select, modify, and so on. The new SYNC_INTERIM_TABLE procedure for the DBMS_REDEFINITION package enables incremental refresh of dependent materialized views on the interim table. The latest generation of the world’s most popular database, Oracle Database 12c Release 12.1.0.2, complete with innovative Multitenant architecture, new In-Memory column store and support for JSON documents . Cloning of a pluggable database (PDB) resolves the issue of setting the source system to read-only mode before creating a full or snapshot clone of a PDB. By defining aggregation and calculation rules centrally in the database, the risk of inconsistent results in different reporting tools is reduced or eliminated. In prior releases, it was necessary to change the application to include calls to start and stop debugging. As a result, outages were exposed leading to user inconvenience and lost revenue. This also extends Oracle Database Vault support to the database recycle bin feature. The non-intrusive configuration of Oracle Universal Connection Pool (UCP) simplifies manageability for custom and packaged Java applications for which source codes are not available. When the timeout occurs, sessions rollback and terminate. New transformations are supported including the ability to use REGEXP redaction on CLOBs and NCLOBs and the ability to redact to NULL values. This is the default Oracle High Availability (HA) configuration for individual shards. Data-dependent caching leads to consistent response times when accessing data across Oracle RAC database instances running in the cluster. Oracle Data Guard broker support for the new multi-instance Recovery Apply feature of Oracle Data Guard allows users who employ the broker to continue to manage standby databases from the DGMGRL interface and allow the broker to fully automate the Redo Apply at all physical standby databases. All ODP.NET specific settings no longer require any operating system level configuration. Roll forward phase for the destination data state to catch up with the source data. Oracle Database Vault common realms and command rules for Oracle Multitenant databases allows common objects of a multitenant container database to be protected by common realms and command rules. Re-balancing of database sessions, as needed, during and after the maintenance completes. Users benefit from broker automation when managing such a configuration. Oracle Data Guard switchovers and Oracle RAC One Node transitions are more seamless during planned outages without requiring additional application logic. However, INSERT AS SELECT cannot be used to move LONG columns, therefore, data for those tables are not moved. If you find any errors, please report them to us The REMAP TABLESPACE option, similarly, remaps all of the specified objects in the existing tablespace into a new one. Data-dependent routing provides high performance data access and availability for applications designed for a sharded database architecture. In both cases, the data files for the PDB being moved must reside on storage that is visible to the current container database and the target container database. The new RESTORE+RECOVER command for data file, tablespace and database performs restore and recovery in one step versus having to issue offline, restore, recover, and online operations. These options, however, do not offer the flexibility of cross-schema table recovery. Support for performing spatial-based queries on JSON documents containing GeoJSON. This extends the usability of DBFS to include applications that use file locks to coordinate application behavior across multiple connections or users. There are important high end customers who make use of PL/SQL APIs to enqueue and dequeue JMS payload in unsharded queues because of ease-of-use and to avoid client-server round trip time. It is easier to fully control your application user interface. With this feature, JDBC supports the ability to BIND PLSQL_BOOLEAN type into any PL/SQL block from Java. Without this you must open the remote PDB or non-CDB in read-only mode. The remote database should be in archivelog mode. SPM is also enhanced to provide a more selective plan capturing and easier verification for customers. This feature enables connections to be load balanced across different recovery server machines. High availability for individual shards is enabled by automatic deployment of either Oracle Data Guard or Oracle GoldenGate replication, at the discretion of the administrator. High compression provides even more space savings than low compression. , 2-Day DBA, Oracle Database 12cR2 , Models can take a partitioning key from the user, which results in building separate models that are tailored to each partition. Every second, Oracle Database can track tens of thousands to millions of moving objects interacting with thousands to hundreds of thousands of regions. Gives higher compression ratios in most cases. Through the implementation of this standard, raster data stored in Oracle Spatial and Graph can be made accessible to a wide range of applications on the web. Now you can also specify high compression. With the development of Universal Theme, there are also several enhancements to the handling of themes and templates. This release incorporates significant support enhancements for storing and querying JavaScript Object Notation (JSON) documents for Oracle Database. It also defers any cursor recompilation, if possible, to avoid spikes in hard parses. Text pattern and faceted search capabilities are enabled with Oracle Text and Apache Lucene. Oracle Data Guard broker can now direct Oracle Active Data Guard rolling upgrades from the DGMGRL command-line interface. This is an extension to the existing read-only table functionality. This allows a clear separation of duties between different applications. and is not warranted to be error-free. However, there were some restrictions which are lifted in this release. The federation of PDBs improves operational efficiency to maintain multiple application tenants from a single master. Access to a pluggable database service is enabled only for IPs that are permitted through an ACL. Using materialized view logs for delta computation together with the stale materialized view, the database can compute the query and return correct results in real time. In particular, there was no guarantee that you could use a single connect identifier to connect to any database in the configuration because each database had its own services running, which may or may not have had the same service name. The goal here is to remove this and the other possible restrictions, and allow the same set of operations when the target database is a primary or a physical standby database. This is a useful tool at customer sites, because it enables you to collect Oracle ACFS metadata for diagnosis without requiring the Oracle ACFS file system to be offline. This feature enables more powerful policy-based conditional auditing by using database roles as the condition for auditing. Title and Copyright Information. The Oracle ACFS snapshot enhancements comprise the following: These Oracle ACFS Snapshot features significantly enhance the snapshot functionality and simplify file system snapshot operations. DBAs can easily find the workspace used by a session. Oracle Application Express release 5.0 Application Builder is more intuitive and productive for developers. access to or use of third-party content, products, or services, except as set forth in The DBA_REPLICATION_PROCESS_EVENTS view records process events, such as configuration changes, start up, and shut down in a database view. Improved manageability of Active Data Guard databases through support of application tuning. This feature enables Oracle Cloud support for Oracle Database over SQL*Net. This feature addresses support for encrypted tablespaces which are also to be migrated using cross-platform transport. This feature enables administrative privileged users, such as SYSDBA, SYSDG, SYSKM, SYSBACKUP, to be authenticated to Oracle Database using SSL and Kerberos authentication schemes. To enhance planned outage functionality for an Oracle Data Guard switchover and Oracle Real Application Clusters One Node, new connection requests are paused until the transition to the new instance occurs. A new capture parameter, ANNOTATE_DDL_SIZE, is available for Oracle GoldenGate integrated capture to specify the size of the buffer that describes the DDL more fully. Transparent redirection of the active database sessions to another functional service. These advantages enable the rapid development and deployment of In-Memory databases and other applications that include multimedia data. Basically, when a data file is lost on a primary or standby database, RMAN generates repair scripts to fetch the file from the primary or standby database. Column toggle enables you to specify the most important columns to view and those columns that should be hidden, as necessary, on smaller screens. New syntax is added to let users specify new file names, or file name transforms, for the data files in a transportable tablespace job. Currently, it is not possible to create a copy of a database when the target database is a physical standby database. In practice, this is a barrier to consolidation. Then, the definition of the table does not matter at import time. With this feature, you can now clone your production PDBs and create point-in-time copies for development or testing without any application outage. This new feature significantly reduces downtime by leveraging the clone functionality to relocate a pluggable database (PDB) from one multitenant container database (CDB) to another CDB. Databases that use Oracle Database Vault can be upgraded to new Oracle Database releases and patchsets using Oracle Data Guard database rolling upgrades (transient logical standby database only). This feature provides significant performance improvements involving parallelism and optimization enabling all algorithms to scale to data volumes found in big data and cloud use cases. The Grid Naming Service (GNS) is linked to the corporate Domain Name Service (DNS) so that clients can resolve dynamic addresses and transparently connect to the cluster and the databases in the data center. Using the correct setup, no errors are reported for either new, incoming work, or for existing work while maintenance is in progress. High compression offers the following advantages over low compression: In Oracle Grid Infrastructure 12c Release 2 (12.2), the installation media is replaced with a zip file for the Oracle Grid Infrastructure installer. The new Data Guard Broker DGMGRL command, MIGRATE PLUGGABLE DATABASE, enables you to unplug a PDB from the primary database and plug it into another container database on the primary system as well as failover a single PDB by unplugging the PDB from the Data Guard standby container database and plugging it into an existing new primary container database on the standby system. This feature allows a list of tables and table partitions to be recovered to an alternative schema other than the original schema of the table. This feature provides additional automation that further simplifies management of Oracle Data Guard configurations. Therefore, it is useful that PL/Scope now knows about the uses of SQL in PL/SQL source code. Complex queries often process the same SQL fragment (query block) multiple times to answer a business question. There was no intrinsic support, so users had to implement a mechanical scheme to discover the covered status, using relatively complex dictionary query, and then to drop each of them. In the interval-based model, Oracle ACFS posts messages containing file content changes on a selected time interval basis. This enhancement decreases the number of manual steps required by administrators to provision Kerberos authentication for Oracle databases, reducing setup time and decreasing the risk for errors. Applications that use ReFS experience better scalability using Oracle Database. STS capture now includes additional statistics that are specific to Exadata, SQL Monitoring, and In-Memory Database. This feature enables better control over which Oracle RAC load balancing nodes the ODP.NET connections are dispensed from to ensure better reliability or performance. Previous functionality allowed for only a single fast-start failover target. The purpose of PL/SQL is to issue SQL statements. The ability to feedback data to auxiliary systems makes Oracle Trace File Analyzer (TFA) the preferred collection tool for all Oracle Database related diagnostic data. STS capture is enhanced to support SQL workload capture across all instances of Oracle Real Application Cluster (Oracle RAC). When enabled, this feature provides the database and replication administrators with more detail about the logical change records being processed. For example, if there are three nodes A, B, C, and A is down at some point in time, then connections are allocated from nodes B and C, first, and then finally to node A. Secondary instances can be promoted to the primary role whenever an existing primary instance fails or is removed by a cluster administrator. The high level restricts access to operating system files, Oracle XML Database, and external tables. These improvements include: This feature makes it easier to work with JSON documents stored in an Oracle database and to generate JSON documents from relational data. If there are resource limitations, then you can define a resource and set its properties. The new choices include date or time values, a larger range for numeric values, and system generated unique file names. Oracle Application Express release 5.0 calendars now support duration-based events and are significantly easier to style. Recursive WITH type queries are typical with graph data found in social graphs, such as Twitter graphs or call records. This feature provides Oracle databases access to data in Oracle ASM disk groups without requiring physical “storage connectivity” to the underlying disks as currently required. This feature also enables parallel loading of XML Data with partitioning and XMLIndex support for inter- and intra-partition parallelism. This feature provides better alignment of Oracle ACFS metadata when an Oracle Automatic Storage Management disk group is composed of all new advanced format drives emulating 512-byte sectors. The ALL_GLOBAL_DBLINKS initialization parameter specifies whether LDAP lookup for database links are allowed for the database. The functions TOKENS and POLICY_TOKENS in the CTX_DOC PL/SQL package now allow a thesaurus name to be specified. This new feature enhances the dNFS Client so that it can support all widely accepted NFS path formats, including both Windows style and UNIX style NFS paths. In the job definition, you can then specify which resources are required to run a job. Learn About Oracle Database. However, doing this does not prevent SYS from using the edition; and nor does it prevent SYS from later regranting the use privilege to ordinary users. This also enables scans, joins and aggregates to perform much faster than the traditional on-disk formats performed. This feature is required for managing CDBs that have many pluggable databases in a public cloud context. A bi-directional search starts from both source and destination nodes, and then advancing the search in both directions. This feature enables client clusters to access a disk group without requiring shared storage. Since redo is not logged during that period, the user must be aware that the redefinition and UPDATE changes cannot be recovered using media recovery. There is also a new ROLLBACK procedure for the DBMS_REDEFINITION package that initiates the swapping of the redefined table with the original table, therefore effectively rolling back the redefinition changes and returning the table to its original state. When a pluggable database (PDB) is unplugged, all data files associated with a PDB along with the PDB manifest need to be copied or moved individually over to the remote server where it is plugged into another multitenant container database (CDB). A SQL boolean is of type NUMBER where as PL/SQL boolean is a true BOOLEAN much like in Java. Oracle Spatial and Graph includes PL/SQL and Java APIs to enable users to define geographic zones, paths, and associated objects. Search. Reducing the number of cursors required can also prevent exceeding the limit of the OPEN_CURSORS system parameter. The low level enables these features. The file system expands by an amount equal to this increment. Oracle Database 12c Release 1 (12.1.0.1) supported up to 252 PDBs for each CDB. The full block size is written to the storage device as the actual size only when the block contains actual (non-empty) data. The benefits include better support for planned maintenance and unplanned outages with less integration work. This feature enhances privilege analysis to capture privileges for the following: New tables are introduced to help customers easily identify unused granted privileges. To designate an instance as read-only, set the INSTANCE_MODE parameter to READ_ONLY. An example of a consumer of this library is Oracle Database PDB cloning using Oracle ACFS snapshots. This feature increases the flexibility of the Oracle Data Guard broker when Oracle Data Guard transport services are used in a heterogeneous configuration where the primary and a Recovery Appliance are of different endianess. With this feature, the processing of large volumes of data is significantly faster than the exact aggregation. Use the apply parameter, BATCHSQL_MODE, to control the parallel apply scheduling of batched transactions. Provides Oracle ACFS Server Message Block (SMB) protocol clients with a transparent service for failover and other NAS enhancements. This feature addresses: This feature increases customer adoption of consolidating their databases deployed with different architecture into the multitenant database architecture. Supports either asynchronous or synchronous replication for near-zero or zero data loss protection. When enabled (which is the default), files are trimmed to only include data from around the time of the event. The identification of positive or negative trends associated with search terms allows the building of richer search applications. A shard topology cache is used to route the connection directly to the shard where the data resides. Oracle Database 12c 2-Day DBA Series (Release 2), This introductory series of short Oracle by Example tutorials will help you get started using Oracle Database 12c. UNIX is a registered trademark of The Open Group. An administrator can validate that a standby database does not contain silent corruptions introduced independently by the I/O stack at a standby database. New capabilities include the ability to define multiple reports on a single page, column pivot, fixed headers, and modernized actions. These models are still bundled as a single model to simplify management and deployment as well as to improve performance. This feature improves performance by reducing the frequency of the connection health validation check, using the following methods: When you use this in conjunction with ValidateConnectionOnBorrow(), the connection is assumed valid for the next number of specified seconds to trust an idle connection. Secondary instances act as backup for the primary instance. A new data guide feature that facilitates understanding of the structure and content of your JSON documents. Oracle ACFS supports I/O requests in multiples of 4096-byte logical sector sizes as well as providing continued support for 512-byte logical sector size I/O requests. Normal MDATA sections can be updated without reindexing the entire document, but there is a performance cost for doing so. This feature is the solution for multitenancy on Oracle Database. This feature provides a consistent and transparent implementation of session state fix up. The VALIDATE_CONVERSION function provides more robust and simplified code development. When replayed, the execution appears to the application and client as if the request was slightly delayed. This enables you to create a data file that you can use on any system without hard coding the complete file specification in a data file. These ACLs are enforced by the listener. You can also change PL/SQL programs to reflect changed requirements by making changes at far fewer sites. Each shard is an Oracle Database that has the same capabilities, with very few exceptions, as an Oracle Database in a non-sharded deployment. Oracle ACFS sparse files greatly benefit NFS client write operations which are commonly received out of order by the NFS server and the associated Oracle ACFS file system. Interactive reports are completely rebuilt in Oracle Application Express release 5.0 to enhance both developer and end-user capabilities. A one command interface is also introduced for Server Control Utility (SRVCTL), Global Data Services Control Utility (GDSCTL), and Oracle Data Guard broker to enable database administrators to control the scheduled maintenance for all applications with a single command from the database. LISTAGG aggregates the values of a column by concatenating them into a single string. The concept of pluggable databases (PDBs) was introduced with Oracle Database 12c (multiple databases sharing a single database instance). A runaway query using excessive amounts of PGA or temporary space can result in serious problems on a database. Indexes are maintained as part of this operation and can be partitioned as well. This feature reduces contention on the $R table when many processes are updating rows at the same time. This feature improves the efficiency of client-based XML encoding and decoding by enabling token tables to be managed at a lower level of granularity than the database. A proxy PDB provides the capability to aggregate data from multiple application backends. Instead, the file names that are in the data file can all be relative to the path specified in the SDF_PREFIX parameter. System that is loaded into the CDB administrator can validate that a user should see an interruption in service enabled! + CONTAINERS ( ) procedure of the most common data maintenance on nonpartitioned tables can reside completely in without... An RMAN recovery operation is required for backup in the database links are allowed for only a logical..., it was necessary to change the application complete and enrich applications consolidation, which can be rolled! Acfs server message block ( SMB ) protocol clients with oracle database 12c release 2 primary.... 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