Category: Oracle Database
In Oracle 12c rel.2 a great number of enhancements to the Oracle database Partitioning option have been introduced. These include: Automatic List Partitioning Filtered Partition maintenance operations Multi-Column List Partitioning Online conversion of non-partitioned to partitioned table Read-only Partitions Partitioned External Tables Automatic List Partitioning: The ability to partition a table based on distinct values in a column has been around since quite some time, but what is new in Oracle database 12.2 is that we can initially partition the table based on values that are known and present in the column we would like to partition the table on....
At Oracle OpenWorld 2017, Oracle Chairman of the Board and CTO Larry Ellison unveiled his vision for the world’s first autonomous database cloud. Powered by Oracle Database 18c, the next generation of the industry-leading database, Oracle Autonomous Database Cloud uses ground- breaking machine learning to enable automation that eliminates human labor, human error and manual tuning, to enable unprecedented availability, high performance and security at a much lower cost. “This is the most important thing we’ve done in a long, long time” said Ellison. “The automation does everything. We can guarantee availability of 99.995 percent, less than 30 minutes of planned...
Per impostare il nome dell’istanza sul prompt della macchina e contestualmente il nome utente e il nome dell’istanza in sqlplus eseguiamo con le seguenti modifiche: ENV PDB – Modificare l’export dell’istanza nell’env del PDB inserendo il nome del pluggable database export ISTANZA=RELAUP – Cambiare nell’export della variabile PS1 ORACLE_SID con ISTANZA export PS1='\u@${HOSTNAME}:${ISTANZA} # ' – Inserire l’export della variabile SQLPATH export SQLPATH=/home/oracle12/cfg ENV CDB – Inserire l’unset del SQLPATH, perchè se rimene settata ci si connette al PDB perché esegue il file login.sql all’interno della directory SQLPATH unset SQLPATH Di seguito gli env di GRELAUP e RELAUP: oracle12@lradbpvm01:RELAUP #...
Two-phase commit protocol is comprised of a set of actions that ensure a transaction involving multiple databases does not produce unsynchronized updates. Two-phase commit provides a way for a series of database interactions on multiple different data sources to be grouped together and completed or rolled back as a single transaction. Two-phase commit transactions that represent a series of database interactions on multiple data sources are referred to as global transactions. At the beginning of a global transaction, a global transaction ID (XID) is generated and used by an external transaction manager to drive the two-phase commit processing across all...
Two-phase commit protocol is comprised of a set of actions that ensure a transaction involving multiple databases does not produce unsynchronized updates. Two-phase commit provides a way for a series of database interactions on multiple different data sources to be grouped together and completed or rolled back as a single transaction. Two-phase commit transactions that represent a series of database interactions on multiple data sources are referred to as global transactions. At the beginning of a global transaction, a global transaction ID (XID) is generated and used by an external transaction manager to drive the two-phase commit processing across all...
This topic contains RANGE-PARTITIONED TABLES that is available since Oracle 8i. 1. RANGE-PARTITIONED TABLES The PARTITION BY RANGE clause of the CREATE TABLE statement specifies that the table or index is to be range-partitioned. The PARTITION clauses identify the individual partition ranges, and the optional sub clauses of a PARTITION clause can specify physical and other attributes specific to a partition segment. Using Reference Partitioning: Range partitioning is useful when you have distinct ranges of data you want to store together. The classic example of this is the use of dates. Here an example: Creates a table of four partitions,...
The PARTITION BY HASH clause of the CREATE TABLE statement identifies that the table is to be hash- partitioned. The PARTITIONS clause can then be used to specify the number of partitions to create, and optionally, the tablespaces to store them in. Alternatively, you can use PARTITION clauses to name the individual partitions and their tablespaces. The only attribute you can specify for hash partitions is TABLESPACE. All of the hash partitions of a table must share the same segment attributes (except TABLESPACE), which are inherited from the table level. Using Reference Partitioning: Hash partitioning is useful when there is...
In recent weeks Oracle has released VM 3.4.3 The principal enhancements present in this release are: Installation and Upgrades: – Simplified UEFI PXE Boot for Oracle VM Server Infrastructure: – Support for Software RAID Devices with Oracle VM Server – Support for Microsoft Windows Server Failover Clustering – Update to Oracle VM Agent for SPARC – Update to the dom0 Kernel – Updates to Multipath Configuration for Oracle ZFS Storage Appliance Performance and Scalability: – Improved Job completion performance – Improved Storage refresh performance – Improved Performance With Multiple Concurrent Connections to the Oracle VM Manager Command Line Interface Usability:...
How to call scenario odi from apex application. Instead to open the client to execute the run of the scenario there is possibility to call odi scenario just using a button created into your application front-end apex. Objects to create – Job type PLSQL_BLOCK – Apex button to enable the job indicated Here the source for the button As we developed the following Download the script that contains: – create job – enable the job created Out of scope: – Create scenario propaedeutic for the job, in this case the scenario calls PKG_ALLINEA_CASSE (see ScenarioName tag)
In recent weeks Oracle has released VM 3.4.3 The principal enhancements present in this release are: – Installation and Upgrades: – Simplified UEFI PXE Boot for Oracle VM Server – Infrastructure: – Support for Software RAID Devices with Oracle VM Server – Support for Microsoft Windows Server Failover Clustering – Update to Oracle VM Agent for SPARC – Update to the dom0 Kernel – Updates to Multipath Configuration for Oracle ZFS Storage Appliance – Performance and Scalability: – Improved Job completion performance – Improved Storage refresh performance – Improved Performance With Multiple Concurrent Connections to the Oracle VM Manager Command...
