Oracle

Use the DBMS_METADATA.GET_DDL () function to do this.Lab Environment: Oracle 11.2.0.4To get the T1 table under the Jingyu user, for example:SQL> conn jingyu/jingyuConnected.SQL> select count(1) from t1; COUNT(1)---------- 100SQL> select

Some SQL (under Oracle) summaries used in the project: 1. Find all indexes of the table (including index name, type, constituent column) 1 Select T.*,i.index_type from User_ind_columns t,user_indexes i where t.index_name = I.index_name and T.tab Le_

1. New class Oraclepersiondao in DAO layer PackageCom.test.dao;ImportJava.sql.*;/*** Created by WDW on 2017/9/16.*/ Public classOraclepersiondao {//database-driven classes PrivateString dbdriver = "Oracle.jdbc.driver.OracleDriver"; //Connection

Failed to load file or assembly "oracle.dataaccess" or one of its dependencies.      An attempt was made to load a program that is not properly formatted. The previous article referred to the DLL reference problem, the main point is that if you used

Today suddenly a customer asked me a question, the database to add a monitoring user, want to do a limit on the number of sessions, here to do a small test, weekday maintenance time also need to pay attention to the database resource constraints.

Principle One: Note the connection order in the WHERE clause:Oracle uses a bottom-up sequential parsing where clause, according to which the connection between tables must be written before other where conditions, and those that can filter out the

Corporate servers have always been using the. Net+sqlserver development approach, and there is a project that needs to read the requirements of remote Oracle. Because Oracle basically does not, is also one side to do the groping.The first is to use

Oracle Automatic Performance statistics?? Efficient diagnosis of performance problems, need to provide complete statistics available, like the doctor to the patient's palpation, to be able to correctly diagnose, and then prescribe the corresponding

Original address: http://www.cnblogs.com/gguozhenqian/p/4262813.htmlThere is a feature in the project need to get data from an Oracle database, this thought is very simple thing, the original SqlClient changed to OracleClient call, the result is far

First, fault descriptionASM Disk group dropped, ASM instance cannot mount. ASM Disk Group has 4 500G disks, database and ASM software 10.2.0.1, the Oracle database is in urgent need of recovery.Second, fault analysisAnalyze the disks that make up

Richard-luiOne: first introduce the working principle of Index Cluster table: ( create cluster first , then CREATE index in cluster, specify column's cluster type when table is created )Clustering refers to the fact that if a group of tables has

Data pump IMPDP to the development database, but the import to index felt stuck.Processing object type schema_export/table/index/index----View status,completed objects:  331 straight without change.

Mybatis Jdbctype Oracle MYSQL Jdbctype ARRAY Jdbctype BIGINT BIGINT Jdbctype BINARY Jdbctype BIT BIT

ASP. NET and Oracle connection stringsConnectionstring= "PASSWORD=CZH; User id=czh;data source= (description= (address_list= (address=) (PROTOCOL=TCP) (host=192.168.168.211)) ( Connect_data= (server=dedicated) (Service_name=skydream))); "HOST:

Course Description: Database basics, Oracle's Environment architecture, Oracle Architecture, SQL Language Foundation, function usage, constraints, indexes, data dictionaries, group queries, multi-table join queries, subqueries, and more. Through a

Top/Bottom Nfirst/Lastntile--① Ranking of all customers by order total--② ranking by region and customer order totals--③ Find the top 13 customers for the total order--④ Find the customer with the highest and lowest order total--⑤ Find the top 25%

First, the preparatory work1. Some changes about Oracle Gird infrastructureBeginning with Oracle Grid Infrastructure 12c 2nd (12.2), Oracle grid Infrastructure software can be used as an image file for download and installation. This feature greatly

Oracle Oracle View tablespace, data file size, and usage SQL statements--Table Space--1g=1024MB--1m=1024KB--1k=1024Bytes--1m=11048576Bytes--1g=1024x768*11048576bytes=11313741824BytesSELECT A.tablespace_name"Table space Name", Total"Table Space Size",

First, my SQL Server R2 and oracle11g are installed on the same computer. Let's take a look at the configuration method:1. After configuring the ODBC installation to complete Oracle in the driver, there will be Oracle in ORADB11G_HOME1 this

Ash and awr relationships Ash is based on v$session, sampling once per second, recording events waiting for an active session. Inactive sessions do not take samples, and sample work is done by the newly introduced background process MMNL.Ash memory