Disclaimer: for the purposes of this post, I'm assuming that the old and new constraints can coexist for at least a brief period. i.e. it's still possible to change data while both constraints are active. If this is not the case you'll need to use solutions likedbms_redefinitionorEdit...
While Oracle Database can combine B-trees (via a "bitmap conversion from rowids"), this is relatively expensive. In general to get the same performance as the three bitmaps, you need to place all three columns in a single index. This affects how reusable an index is, which we'll come...
Step 1: Use the desktop icon to launch Oracle SQL Developer. Step 2: Select the Connections option under View. Step 3: Right-click Connections in the Connections tab and choose New Connection. You’ll see a window asking you to choose a new database connection. Step 4: Fill in the corr...
a free-of-charge service supplied byOracle's public yum serverwith which Oracle Linux and Oracle VM can be maintained without a subscription. By performing the steps in this lab, you will obtain a fully supported and certified configuration for Oracle Database (whereas on VMware, Oracle ...
A database will and can have a lot of additional information (DB Version, Status, Project Manager, Database Manager, ...) which I have kept out of the description to simplify the explanation. To get the project going I wanted to output a list of unique SQL Servers with a ...
How do I check if EmpID EE# exists in SupervisorID column and categorize it based on Manager or Individual Contributor in OBIEE. Here's the table for reference. Currently, consider there are only 2 columns EmpID EE# and SupervisorID. I need a formula t...
“Unable to enlist in the transaction” with Oracle linked server from MS SQL Server [<Name of Missing Index, sysname,>] in non clustered index [Execute SQL Task] Error: The value type (__ComObject) can only be converted to variables of type Object. [ODBC Driver Manager] Data sou...
ModeDescription SINGLE_SELECTION Only one item can be selected at a time. When the user selects an item, any previously selected item is deselected first. SINGLE_INTERVAL_SELECTION Multiple, contiguous items can be selected. When the user begins a new selection range, any previously selected item...
For more information on UI defaults, see chapter 5, "Using SQL Workshop to Manage Database Objects" in the Oracle HTML DB User's Guide. By default, the Primary Key column does not display. Oracle HTML DB expects that the primary key will be system generated and is therefore not ...
If you have a mouse with a wheel (which is generally between the mouse buttons) use the mouse wheel to scroll the image vertically. Click thecmtoggle in the upper left corner of the scroll pane. The units on the row and column headers change to inches (or back to centimeters). ...