Oracle

To create a table for an Oracle database: Dim myConnectionString as String Dim MyConnection as OleDbConnection Dim MyCommand as OleDbCommand Dim Mycreatesql as String myConnectionString = "provider= ' oraoledb.oracle.1"; User id=[user ID];D ata

The Oracle data Import Export IMP/EXP is equivalent to Oracle data restore and backup. The EXP command can export data from a remote database server to a local DMP file, and IMP commands the DMP file to be imported locally into a distant database

* * Environment Description * * Operating system: CentosEnvironment: oracle11gftp:192.168.148.121 User: Dell Password: 123Solution: Automate backup with Linux crontab-tasks * * Detailed procedure is as follows * * **1, complete Linux automatic

applicable conditions for bitmap indexingBitmap indexes are suitable for columns with only a few fixed values, such as gender, marital status, administrative district, and so on, while the type of the ID number is not suitable for bitmap indexing.

Implicit cursors: You can only return one row of results at a time (no definition, default auto-build) Span style= "Font-family:courier new, Courier; FONT-SIZE:16PX ">  explicit cursor: Requires a developer to define in advance, you can loop

There are more and more databases that need to be migrated. How to measure the database performance before and after has become a difficult point. This article uses the AWR Compare report to solve this problem.The following are test library

Call the Java program in Oracle, note: The Java method must be of type static if you want to use System.out/err output log in Java.Need to execute "call Dbms_java.set_output (5000);" In Oracle.First, Helloword1 Write Java program, also write in

There are many solutions to the syntax of Oracle without the IF exists (...), which is the first to analyze the three commonly used, the last one recommendedThe first is most commonly used to determine whether the value of count (*) is zero, as

first, the new database1. Create a new database. 1.1 Open the Database Configuration Assistant;1.2 Select New Database, Next, choose the first "general purpose or thing processing";1.3 Give the database a name, which is the unique identifier. (the

Check extraction process modein the Ggsci environment, execute a statement similar to the following to see the status of a particular process. Ggsci>Info Where, is the process name.Example: the Epubadm process extraction mode shown isIntegrated

I. Getting started with Oracle analytics functionsWhat is an analytic function?Analytic functions are powerful functions that Oracle specifically uses to address the statistical requirements of complex reports, which can be grouped in data and then

Recently when performing performance tests, the developer directly hung all the business tables into the Oracle database because of the space data to be mounted. Several recent tests have found that the response time and throughput are not ideal,

Summarize the sequence and trigger used, and use some of the corresponding actions. The problems encountered are more wonderful, for reference only.I. Sequence part (on-line)1 , set up a sequence SEQUENCECreate sequence User_seq increment by 1 start

The example given below for writing text file or Csv Using Text_io Package from a tabular block in Oracle Forms. Suppose there is a tabular grid data block ' job_history ' in your forms ' and you ' want to ' write a CSV on click of a button by

When the Oracle database has just been installed, the command cannot be entered as a MySQL database, the commands executed on the screen are clear, and the commands that were executed last time are repeatedly executed, and the wrong command is not

1. View all table space sizessql> Select Tablespace_name,sum (bytes)/1024/1024 from Dba_data_files Group by Tablespace_name;2. The size of the table space that has been idlesql> Select Tablespace_name,sum (bytes)/1024/1024 from Dba_free_space Group

--PRIMARY keyCREATE TABLE EMP (ID number constraint ID_PR primary key, name1 varchar (8));CREATE TABLE EMP9 (ID number, name1 varchar (8), constraint ABA_PR primary key (ID,NAME1));--FOREIGN keyCREATE TABLE EMP1 (ID number references emp (ID), name

We all know that every SQL statement in Oracle needs to be parsed before it executes, where it is divided into soft parsing and hard parsing. There are two types of SQL statements in Oracle, one for DDL statements (data definition language), and

The original Oracle reset sequence begins with a specified number of methodsResets the Oracle sequence starting with the specified numberDeclareN Number(Ten); V_startnum Number(Ten):=10000001;--starting from how muchV_step Number(Ten):=1;--Step

General steps for handling common undo exception errors, ORA-600 4193, ORA-600 4194, ORA-600 4137, etc.Applicable versionOracle Database-Enterprise Edition-Version 9.2.0.1 to 11.2.0.4 [Release 9.2 to 11.2]Information in this document applies to any