[C#] Oracle.DataAccess issue - Unhandled exception of type System.TypeInitializationException occured in mscorlib.dll [C#] Regex - Best Validation of Domain? [C#] Upload pictures with HttpClient - data not sending correctly [C#]conversion from time to double [Help] Get the target path of short...
To add a DEFAULT constraint to a column in a table when you create it inOracle, add the default database keyword to the Create Table statement: CREATE TABLE tablename ( columnname datatype DEFAULT defaultvalue ); For example, to set a person’s employment status to a default of “Hired”...
I use the RegistryKey.SetValue("",""), but it set the value to null string, how to restore to "value not set"? I cannot delete the key and re-create the key. All replies (5) Thursday, May 10, 2018 2:20 PM ✅Answered In case of default values, try key.DeleteValue("")....
Added in Oracle Database 18c,PTFs enable you to define the shape of a result set. So you canadd or remove columns from the input tablebased on the parameters you pass. The engine of a PTF is a package that has two core components: Thedescribefunction which sets the columns in the outp...
This chapter is a basic tour of the kernel-provided device infrastructure in a functioning Linux system. 本章是对Linux系统中内核提供的设备基础架构的基本介绍。 Throughout the history of Linux, there have been many changes to how the kernel presents devices to the user. We’ll begin by looking...
But first, let’s delve into the different types of indexes available in Oracle Database.How to Choose the Index TypeOracle Database offers many different types of index to improve your SQL. One of the key decisions you need to make is whether to go with a bitmap or B-tree index....
it cannot be a function or an expression. This means, for example, that you cannot set the default for a date column to be the value of a function such as NOW() or CURRENT_DATE. The exception is that you can specify CURRENT_TIMESTAMP as the default for a TIMESTAMP column. See Secti...
In this article, we will look at the new repository mirroring service that has been included in Oracle Solaris 11.2 to help administrators keep their local repositories in sync with Oracle's hosted package repositories. We will also look at some of the n
alter system set undo_retention = 86400 scope = both; Take care before doing this. Oracle uses the undo tablespace to run flashback queries. So increasing the retention means you’ll need to make this larger to support flashback. This could lead to a big jump in storage requirements. ...
Configure the default HTTP server on Oracle VM Manager (port 80). Prepare an Oracle yum server based onhttp://public-yum.oracle.com. Note: To run this lab from your home or office, perform the tasks inAppendix Afirst to prepare your environment before you run the lab. ...