Oracle

Reference:http://bbs.csdn.net/topics/390866155Auxiliary reference:Http://www.2cto.com/kf/201307/226848.htmlhttp://blog.csdn.net/grhlove123/article/details/7549290In SMM, such a controller is written in a different way;Stored procedures:Create or

One, Oracle service managementUnder the Windows operating system environment, the Oracle database server runs as a system service. All Oracle service names start with Oracle. There are 3 main Oracle services: Oracletnslistener: Listener

If you find that you cannot modify, delete, or manipulate a table, you can use the following statement to query whether the table is locked.--Query lockSelect sess.sid,sess.serial#,

In Oracle database operations, why is it that sometimes a field in a table is indexed, and when the execution plan of some language is observed, it does not go through the index? How to solve it? In this article we mainly introduce this part of the

Oracle uses a regular expression of 4 functions:1. Regexp_like (Expr_col, ' regular expression ')2. Regexp_substr (Expr_col, '3. Regexp_instr4. Regexp_replacePOSIX Regular expressions are composed of standard metacharacters (metacharacters):' ^ '

There is a concept of table space in Oracle. To create an Oracle database in a system, you first need to create a user, then assign a table space to the user, and the table space stores the underlying elements such as tables. If you do not

1 ----1 prepare to unlock ctxsys users and authorize-----2 3 --Unlock Ctxsys4 Alter Userctxsys account unlock;5 --Modify the Ctxsys password (if the Ctxsys user expires, you need to reset the password)6 Alter UserCtxsys identified byCtxsys;7 8

In Oracle, you can create a separate sequence for the primary key of each table, and then get an automatically incremented identifier from the sequence and assign it to the primary key. For example, the statement creates a sequence named Customer_id_

Existence Table Dept_ktime:ID Dept ktime1 Technology 2015-07-122 production 2015-10-223 Logistics 2014-01-034 Production 2015-10-255 Technology 2014-02-236 Technology 2015-03-297 Logistics 2015-02-108 Logistics 2015-05-019 Logistics 2015-05-12Check

Oracle Connect by and recursive with, oracleconnectHierarchical Query Select * from emp; Select empno, ename, job, mgr, deptno, level, sys_connect_by_path (ename, '/'), connect_by_root (ename) From emp Startwith mgr isnull Connectbyprior empno =

ORACLE unlock, table retrieval and program retrieval statements, oracle unlock Recently, my colleagues often encounter lock tables, accidental table deletion, and program overwrite situations. We summarize the solutions for these three situations: 1.

Oracle does not go through the index. In Oracle Database Operations, why do some fields in a table obviously have indexes? How can this problem be solved? This article mainly introduces this part. Next let's take a look at it.There are several

Black screen of vncviewer during ORACLE11g Installation    1. vnc viewer black screen:    2. The desktop components under centos are not installed properly. Yum groupinstall "X WindowSystem" "KDE Desktop" Desktop-y   Yumgroupinstall-y

Advanced Oracle database query (basic) Although the title is written in the Oralce database, SQL statements are similar. Therefore, other databases can refer to the following logic. Every programmer knows that in a project, the query function is the

A Preliminary Study on filesystemio_options parameters of oracle asynchronous IO Filesystemio_options parameters of asynchronous IO Recently, when chatting with an old DBA, I heard of a parameter about asynchronous IO. So with a little curiosity,

Kettle _ creates a carte service for the sub-Server Create carte in kettle as a windows service item Tip: the function of Carte is to remotely monitor the subserver of kettle extraction status. Download from the official website: Copy the

Using PLSql to connect to Oracle Reports error ORA-12541: TNS: No listener Many times oracle services are disabled to optimize our startup items. However, when we use PLSQL to log on to oracle after restart, no listening program will appear, which

OracleTemp tablespace Switch I. Functions of TEMP tablespace Temporary tablespace is mainly used to provide temporary computing space when the database performs sorting, index management, access view, and other operations. After the operation is

After you click finish, either dbca or dbuahang After the "finish" button is clicked, either dbca or dbua hangSource:DBCA/dbua appears to hang after clicking finish button (Document ID 727290.1) Applicable:Oracle Database Configuration

An error occurred while checking the network configuration requirements when installing the Oracle database. Error message: Checking Network Configuration Requirements... check complete. The overall result of this check is: Failed Tip: configure