Oracle

Start the database to view the database log:Wed Dec 17:40:32 2014db_recovery_file_dest_size of 3882 MB is 0.00% used. This was auser-specified limit on the amount of space that would be used by Thisdatabase for recovery-related files, and Doe s not

One: The gentle way:1, view all job;SELECT * from Dba_jobs;2, check the running job;SELECT * from Dba_jobs_running;3, according to SID isolated the corresponding session;Select sid,serial# from v$session where sid= ' &sid ';4, kill the corresponding

The fault simply describes: The Linux system does not open hugepages, the host memory will be nearly 300g,swap 32G. ORACLE's sga_max_size settings are nearly 500 of the host's internal memory, which is approximately 60% of the hosts, and the

Anyone familiar with Oracle knows that by setting Oracle's nologging option, some operations can be done quickly, with the risk that a database backup might fail. There are a lot of things you can do with nologging, and gather the following

1. This is because the client is a Chinese environment, format mon can not be used in English months, must be in Chinese "June"If you do not want to modify the SQL statement to run, you need to use the ALTER session command to modify the

CREATE TABLE test (ID int not NULL primary key,name varchar2 (), sex int);Create sequence T, Squence, named Tminvalue 1, minimum maxvalue 100000, Max start with 1 Starting from 1 increment by 1 , the growth ratio nocache- a

1. After installing the Oracle database: Execute Dbstart and Dbshut will prompt:[Email protected] ~]$ DbstartOracle_home_listner is isn't SET, unable to auto-start Oracle Net ListenerUsage:/u01/app/oracle/oracle/product/10.2.0/db_1/bin/dbstart

Add comments to a tableComment on table Mw_sys. An object instance of the Mwt_om_obj1 is ' business type. ‘;Add a comment to a column in a tableComment on column Mw_sys. Mwt_om_obj1. A unique identifier for the obj_id is ' object. ‘;Comment on

CREATE OR REPLACE FUNCTION fgetpy (v_str VARCHAR2)RETURN VARCHAR2AsV_strlen INT;V_return VARCHAR2 (500);V_ii INT;V_n INT;V_c VARCHAR2 (2);V_chn VARCHAR2 (2);V_RC VARCHAR2 (500);/************************************************************************

Many times, development modules need to import historical data based on user-supplied Excel. There are many tools (for example: Xlstoora) or plsql that can be used to achieve the desired effect.The following is mainly about the use of the Xlstoora

When we operate the database, we sometimes encounter the need of insertorupdate.If there is data in the database in the update, insert if it does not exist.In the past, additional select queries are required, and if there is data on the update,

Before installing the WebMethods to install an Oracle database, in the use of the process encountered some problems, through the Internet to find data after the resolution. As this kind of problem has appeared several times, therefore summarizes the

Description:JAVA springmvc+mybatis (Oracle and MySQL) HTML5 new tall still background framework bootstrap1. Support App phone app (Android and iOS) interface call2. New high-html5+css3.0+bootstrap development interface UI, beautiful and stylish,

Examples of using Java to manipulate Oracle databasesFile name: Testora.javaimport java.sql.*;p ublic class Testora {public static void main (String args[]) {try {Class.forName ("Sun.jdbc.odbc.JdbcOdbcDriver");Connection conn =

First, the basic concept of the database.Database is the warehouse of data storage, can be faster query, processing, statistics, but also to maintain the consistency of data, sharing and security, convenient only analysis, to generate new useful

1, set up a "Oracle_backup" folder in the E-disk, the folder is built two folders are: "New", "old", and then create a new bat file in the Oracle_backup folder, named "Expdb.bat", the contents are as follows:REM * * File:expdb.batREM * *

%type,%rowtype in Oracle1. Using%typeIn many cases, a PL/SQL variable can be used to store data in a database table. In this case, the variable should have the same type as the table column. For example, the first_name column of the students table

Basic Oracle tablespace, basic oracle tablespace Database Storage Structure Databases are mainly used to store and retrieve relevant information. Oracle databases include logical and physical structures. A physical structure refers to a real storage

Oracle table join-sortmergejoins sort merge joinI. sort merge joins connection (sort and merge connections) PrincipleWhen two tables are connected, the join columns are sorted separately and then merged to obtain the final returned result set.Assume

PLSQL _ base Series 8 _ operator LPAD/TRUNC/DECODE/TRIM/INSTR, plsqllpad BaoXinjian I. Character Functions 1. LOWER (strexp)-returns a string and lowercase all characters. select lower('ABCDE') from dual   2. UPPER (strexp) returns a string and