Oracle

A few days ago, I saw some friends. To export data from Oracle, you can use Pl/sql devoleper and export tables to export data from n tables to insert INTO statements, but how to export them with SQL statements, only with SQL constructs, Here's the

Oracle's NVL functionNVL () functionReturns a non-null value from two expressions.GrammarNVL (EExpression1, EExpression2)ParametersEExpression1, EExpression2If the eExpression1 evaluates to a null value, NVL () returns EEXPRESSION2. If the

A, avoid using the IS null and is not NULL operation on an indexed columnTo avoid using columns that can then be empty in the index, Oracle will not be able to use that index. For a single-column index, if a null value is included, the index does

Get table field:SELECT *From User_tab_columnswhere table_name= ' user table 'ORDER BY column_nameGet Table Comments:SELECT *From User_tab_commentswhere table_name= ' user table 'ORDER BY table_nameGet field Comments:SELECT *From

Turn1. Turn off all Oracle services. Can be turned off in the Windows Service Manager;2. Open registry: Regedit Open Path: regedit> hkey_local_machine\system\currentcontrolset\services\ Remove all service names starting with Oracle under this path,

Controller layer:@Controller@RequestMapping (value = {"/test/testcontroller"})Public class TestController extends Basecontroller implements Servletcontextaware {private ServletContext ServletContext;@OverridePublic void Setservletcontext

Oracle Backup, Recovery single-table or multi-table data steps for Oracle 8, 9, 10.* Backup single or multi-table data :[Java]View PlainCopy Exp User/password@server file=filefullpathname log=logfullpathname tables= (Tablespacename.table1,  

Solutions for querying paging data using SQL Server SQL statements: You must select 3,000th records on page 1 of tbllendlist, with 100 records on each page. ------------------------- ----------Method 1:----------Select Top 100 * From

The training content developed for the optimization, backup, and restoration technologies related to Oracle databases will involve the following content.   Oracle Optimization 1. Oracle optimizer based on cost and rules and how to select Oracle

  After some hard work, I finally got to install oracle in win7. I 'd like to share the process and notes.   1. Chinese considerations 2. During the installation process, select the compatibility mode, such as a chip. Select "compatibility" and run

Partition indexes are divided into local indexes and global indexes ). For a local index, each table partition corresponds to an index partition. When the table partition changes, the index maintenance is automatically performed by Oracle. For a

In Oracle 11g RAC, it is found that both the Solaris and GSD services are in the offline status, which is the default situation of Oracle 11g RAC. Even so, the use of the database is not affected, because the resource for the WLM is used, WLM is

The first is several terms that need to be understood: a cluster refers to the physical connection of multiple computers. RAC is short for Oracle Real Application cluster. Official Chinese documents are generally translated as "real application

When Oracle 11g is exported using export, the empty table cannot export 11g R2 with a new feature. When the table does not have data, no segment is allocated to save space. Solution: 1. Insert a row and then roll back to generate a segment. This

Transferred from:Http://blog.csdn.net/sting0218/article/details/5915308 thanks to the author 1: You must first open the listener. You can use either of the two methods. One is to manually open the listener in the control panel-> Administrative Tools-

Scott's password is: Tiger The system password is Manager. Sys password: change_on_install   If you have installed oralce9i, note the following when using system or sys for connection: If the current connection is system/super Administrator

Question: Answer: SQL> select * from session_privs; PRIVILEGE----------------------------------------ALTER SYSTEMAUDIT SYSTEMCREATE SESSIONALTER SESSIONRESTRICTED SESSIONCREATE TABLESPACEALTER TABLESPACEMANAGE TABLESPACEDROP TABLESPACEUNLIMITED

Author: network collection, source: IT expert network, responsible editor: ttdb, The decode () function is one of the powerful functions of Oracle PL/SQL. Currently, only oracle SQL provides this function, this function is not available for SQL

  Currently, paging technology is becoming more and more common in Web applications. Using database query paging is a highly efficient method, The paging query statements for Oracle, DB2, and MySQL are listed below.   I. OracleSelect * from (select

   1. maxdatafiles parameters in the control file For instructions on Oracle control files, refer to my previous blog: Oracle Control File Http://blog.csdn.net/tianlesoftware/article/details/4974440   There is a parameter in the control file of