oracle data warehouse builder

Configuring the Oracle 11g Data Guard (logical standby) Oracle Data Guard logical standby database based on the same host uses a backup of the master database to first create a physical standby database, then convert it to a logical standby database. After that, the master database transmits the logs to the slave datab

First, to improve the DML operation method: In short, 1, suspend the index, restore after the update. Avoid the rebuilding of indexes in the process of updating. 2, batch update, every update some records in time to submit action. Avoid large amounts of rollback segments and or temporary tablespaces. 3, create a temporary large table space to respond to these update actions. 4, batch update, every update some records in time to submit action. Avoid large amounts of rollback segments and or tempo

SQL statement, there is a query method for the logical "and", "or" operation between many fields. Disadvantage: 1. Index columns are not suitable for frequent DML operations. 2. Low Value repetition rate is not suitable for use. 3. Bitmap indexes are suitable for use in data warehouses and are not frequently used in OLTP. Create bitmap index index_name on table_name (column_name ); 3. Text index Application Scenario: it belongs to the category of

After Oracle Releases PL/SQL and Java application programming interfaces (APIS), the click tool or builder that can use the newly released APIs will be launched on the market, this is generally the best practice. With this practice, developers can immediately integrate new features into their applications to benefit their enterprise. However, developing specialized tools that can use the new APIs requires a

Tags: share preface. com CTI installation configuration parameter parameters LTE passObjectiveThis paper deals with Odp.net and ODP. NET managed (managed) driver, the Entity framework of the managed drive these three parts of the download, installation, configuration.1. IntroductionNuGet is a. NET Software Development Kit management tool that generates and uses these development packages, including non-Microsoft software development kits, such as odp.net. NuGet Gallery is the "

Label:Brief introduction:Greenplum is a database repository based on the MPP architecture developed by PostgreSQL database, which is suitable for OLAP systems, and supports the storage and processing of 50PB (1PB=1000TB)-level massive data.Background:One business today is the need to synchronize the underlying data in an Oracle database to the Greenplum Data

Thunder Fighter is the latest fiery air combat shooting game, Liu said: Please carry our Thunder fighter for cross-platform data migration-the table space can be transmitted, but also hesitate to board, please immediately boarding, open the Endless challenge mode!You can use the Transportable table space feature to copy a collection of tablespace from one database to another.The transportable representation space is useful in a number of scenarios:Exp

With the development of enterprise business, there are more and more large data warehouses, and their scale is also expanding rapidly, increasing by three times every two years on average. Large Data Warehouses require scanning dozens, hundreds, or thousands of disks at the highest read speed. Therefore, enterprises often find that the larger the data

Tags: sequential single quote Start full application instance field name commit tableThe data manipulation language, manipulation language, which checks for DML, mainly includes the search (SELECT), insert, UPDATE, delete, is a core part of SQL. A DML begins a transaction, and the next DML is the statement in the same transaction until it commits (commits) or rolls back (ROLLBACK). Let's describe the syntax and instance resolution of INSERT, UPDATE, d

Tags: des c a file data usageToday, we are prepared to further refine the functionality and make it more automated, based on the gadget model_sql written @zhangkai05. Convenient for modeling personnel to develop ETL tasks.After the source code changes, it is published to Git (URL address) and is gradually perfected.Describe the status quo and problemsTeam Data Warehouse