Oracle

Today, installing Oracle10.2.0.4 on the Dell server's Redhat 6.4 and logging into the database with Sqlplus, you will receive the following prompt:Map size mismatch; Abort:success, but the other functions are normal, just have this

Oracle Data Access Component (ODAC) Full name: Oracle Database Access ComponentsPros: Because Microsoft will deprecated System.Data.OracleClient.dll in. NET Framework4, and in terms of access efficiency and speed, System.Data.OracleClient.dll

First look at how SQL writesSelect * from ( Select A.*, ROWNUM rn from (lowest query statement ) A where< = #{endcol} ) where >

Oracle Timing Plan Quick Use preface:SQL Server has a related timing schedule that can be configured directly by opening the SQL Server Task Manager, allowing you to quickly and easily implement the appropriate tasks. The corresponding Oracle also

These days, the reinstallation of the system, the so-called development tools are to be reinstalled. A little bit of distress, but also learned a lot of practical knowledge, in this readers.Because of the low-voltage version of the computer, running

OracleOracle can run on all major platforms (including Windows). Full support for all industry standards. Adopt a fully open strategy. Enables customers to choose the solution that best suits them. Full support for developers, Oracle parallel

First, install the driverIf you are using a 32-bit win2003 operating system, there will be a system-brought Microsoft OLE DB Provider for Oracle driver, so no additional preparation is required, but if you are using a 64-bit system, this driver is

1. Add a data file to create a tablespace1 CREATE ' D:\ORACLE\11G\ORADATA\ORCL\TEST1. DBF'onNEXTSPACEThe deployment needs to change parts as needed:Tablespace (table space) after the table space name TEST1;DataFile (data file) path, red part of the

Experimental object: Two Linux stand-alone Oracle 12C databases (both large and small versions are consistent), data migration takes a cold backup way. The path of the target machine is inconsistent with the source library and needs to be rebuilt

ALTER TABLE UserInfo Add (msn varchar2 (20));1. Build a table CREATE TABLE UserInfo ( ID Number (6), Name VARCHAR2 (20), Sex number (1), Age Number (3), Birthday date, Address VARCHAR2 (50), Email VARCHAR2

1. Create a batch file@echo off rem ########################################################### rem # Windows Server 2008 Oracle Database Automatic backup batch script REM ###########################################################Setcurdate=%date:~0

Purpose of this function: Returns a tableImplemented in Oracle, example:1--in the types:2Create or replace type objtable as Object3 (4S_usercode VARCHAR2 (32767),5S_username VARCHAR2 (32767)6 );7 8 CREATE OR REPLACE TYPE tabtemp as TABLE of objtable;

1. Enter "Sqlplus/nolog" on the command line to start the tool.2. Connect to Oracle Server conn username/password @ server connection string as connection identityThe client tool connects to the server based on the server connection string, and

For large databases, Oracle occupies a very large amount of disk space, mastering those users in the database, the table takes up more disk space, and the growth situation, you can easily maintain and expand the disk system later.Oracle disk space

JAVA-JDBC connecting Oracle databases, statement and PreparedStatement comparisons (querying query) 1. PreparedStatement Interface Inheritance Statement, the PreparedStatement instance contains compiled SQL statements, so it executes faster

PL/SQL notes (1)-process control, loop, exception, block, plsqlProcess control 1.If, then, else, elsif (not elseif) if a='1' then null;endif; 2. Simple Case expression: search-type case expression: 3. goto statement beginif true then goto

An example of the row-to-column and column-to-Row Operations in Oracle Data Tables. Row-to-ColumnOne table The query result is -- Row-to-column Conversion select years,(select amount from Tb_Amount as A where month=1 and A.years=Tb_Amount.years)as

Oracle ORA-00031: session marked for kill (marking the session to be terminated) solution, ora-00031marked Today, I encountered a problem where a table cannot be operated and may be locked. The first thing I thought was to kill the session. So I

Plsql + green version of oracle remote database connection configuration and prompt the lack of msvcr71.dll solution, plsqlmsvcr71.dll I have been using sqldeveloper to connect to the oracle database. This is free of charge and is also officially

Oracle SQL Developer Connection error (ORA-12505)I had a problem with my Oracle database, and I finally got it done. Today I have created another DBA administrator connection method, and I will share my solution with you, I hope it will be useful to