There could be data in the table which violates an unvalidated constraint. So the database can no longer rely on it to optimize some operations. For example, usingconstraints to get better execution plans. To overcome this it's good practice to validate constraints. This ensures all existing r...
generation alter something called "sequence" in the database... I can see that sequence in Oracle's object browser, but there is a table called "SEQUENCE" as well, I am confused :/ Or maybe this is only in Oracle, that table-based identity generation (whatever does "table-based" means...
In physical standby mode, the Oracle database directly replicates logs from the primary database and does not generate any logs. If the source is an Oracle database, you
Once a SET TRANSACTION READ ONLY statement successfully executes, only SELECT (without a FOR UPDATE clause), COMMIT, ROLLBACK, or non-DML statements (such as SET ROLE, ALTER SYSTEM, LOCK TABLE) are allowed in the transaction. Otherwise, an error is returned. A COMMIT, ROLLBACK, or DDL ...
In Oracle Application Express, you can create check boxes as form elements, or you can create check boxes in reports. Check boxes on a form work similarly to lists of values. When you define an item to be a check box, you need to provide the check box values in the List of Values ...
An introduction to the create table, alter table, and drop table commands in Oracle Database. Use these to create, change, and remove database tables.
This demo shows how to configure Oracle WebLogic Server to work with Oracle Real Application Clusters (RAC) as well as how to test the connections to the backend Oracle RAC nodes using a web application.Oracle WebLogic Server 10.3 integrates Oracle Real Application Clusters (RAC) features in ...
If your RANK field is not using the correct collation, running the following SQL statement to fix it: altertableAO_60DB71_LEXORANKmodifycolumnrankvarchar(255)collateutf8_bin; Query your database again, as described in the 'Diagnosis' section, to confirm that...
2. Map out skills needs for now and the future: Next, business leaders can collaborate with HR to map out what skills their departments need now and how those needs will likely shift over time as advances in technology, products, and industry practices alter role requirements. Some HCM platfo...
Migrate Data from MySQL to MS SQL Server Get a DemoTry it Migrate Data from Oracle to MS SQL Server Get a DemoTry it Migrate Data from MongoDB to PostgreSQL Get a DemoTry it Step 4: Creating a Linked Server in SQL Server For this step, it is recommended that you leverage the followi...