Oracle

It is difficult to manually enable the Oracle service on the control panel. You can solve this problem by executing a batch file. Set the followingCodeSave them as the X. BAT files respectively, and then double-click them to execute them directly.

Log on to the Oracle database through PL/SQL, and then execute the menu: File/New/command window, open a command window, and then execute the script in the Command window to create and delete tablespaces. Create a tablespace SQL> Create

Compared with other databases, Oracle Data has the primary feature of introducing tablespaces. This articleArticleLet's talk about the Oracle tablespace. Oracle Database pioneered the design concept of tablespace, which makes an indelible

Purpose: The Escape keyword is often used to escape certain special characters, such as wildcards: '%' and '_', as the meaning of their original characters, The defined escape character '\' is usually used, but other symbols can also be used

[Guide] Using regular expressions in Oracle requires the following four functions: Oracle uses regular expressions without these four functions: 1. Regexp_like 2. Regexp_substr -- Select regexp_substr ('aaa, BB, CCCCC, DDD, vvv ',' [^,] + ', 1, 4

  I. query tables and fields corresponding to foreign keys 1. Use the following SQL statement to query the table corresponding to the foreign key and the field p represents the primary key R represents the foreign keySelect a. constraint_name, A.

  -- Create Table try as select * from student basic information; -- add the deferred primary key alter table try add constraint pk_try primary key (student ID) deferrable initially immediate; -- set the primary key delay set constraint pk_try

JmeterThe Manual describes how to accessMySQLBut does not explain how to access Oracle. ForJavaApplication development experience and friends who are not particularly familiar with Oracle can refer to this article to easily and quickly configure

1. to display the content in dbms_output.put_line (v_rolename), run the command in SQL * Plus first. Set serveroutput on; Ii. cursor classification: Using ref cursor, you can pass the result set between programs (one program opens the cursor

Use myeclipse to connect to the Oracle database through JDBC, JDBC is one of the J2EE standards, the following uses an instance to describe the connection process, and compare to use ADO. Net to connect to sqlserver.Preparedstatement the

Oracle Database Development (6). A first registration of OCI Vert melon Jun 25,2007 1. Preface Last time, I provided a full example of OCI, which contains the actual code of ConnectionAnd SQL. Certainly it cocould not cover all of the knowledge, but

Note: Sid-Database IDHome_name-Oracle Home Name, such as orahome92 and orahome81(1) oracleservicesidDatabase Service, which automatically starts and stops the database. If a database is installed, its default start type is automatic. The service

The operating system is centos source server name: A target server name: B Operate on server Su-Oracle 1. Create a directory in the Linux directory to save exported data files Mkdir-P/home/Oracle/expdp_dir // create a server once Sqlplus/As sysdba 2.

Oracle databases have two log operation modes: nonarchivelog and archivelog.3.1 nonarchivelog ModeNon-archive mode refers to the log operation mode that does not retain redo records. This mode is only suitable for instance recovery and not for media

Abstract Oracle 9i introduced the pga_aggregate_target parameter to help better manage session working areas in a session's program global area (PGA). This paper discusses available methods to help tune this new Oracle 9i parameter. Introduction

Original article: http://desert3.iteye.com/blog/811007 -- Not a number select * from dual where not regexp_like ('1 is not a number 1', '^ [0-9] + \. {0, 1} [0-9] * $ ') -- select * from dual where regexp_like ('1. 1', '^ [0-9] + \. {0, 1} [0-9] *

How can I efficiently import an Excel file to Oracle? Compared with SQL bulkcopy imported to SQL Server two days ago, Oracle also has its own method, which is a little more complicated.That is, the SQL * loader function of Oracle is used, while

When creating a job, where: What -- stored procedure to be called during job execution; Next date -- next job execution time; Interval -- job execution interval. This parameter involves the value of next date. Next is calculated based on

# Include "stdafx. H"# Include Using namespace STD; # Include // # Define otl_ora10g# Define otl_ora9i // compile OTL 4.0/oci9i# Define otl_ora_utf8 // enable utf8 OTL for oci9i# Include // include the OTL 4.0 header file# Pragma comment (Lib, "OCI.

  1) field method: varchar2 (50), number, date, integer, char (10)2) Default Time: oprtime date default sysdate not null; call_time datetime default getdate () not null,3) create an index: Create index idx_accountchange on account_changehistory