Oracle

1. directly operate in DOS; 2. perform operations under the downloaded SQL plus provided by Oracle. 3. perform operations on the webpage (because the third type is relatively less useful, I hereby write it down to facilitate searching when using it )

I often ask my friends how to become a master when learning oracle. I would like to give a few simple points based on my personal experience: 1. lay a good foundation from a simple perspective Learning Oracle cannot rush to success, and hopes to

How to convert timestamp (milliseconds to 1970-1-1) to Oracle date type   * Convert timestamp to date   Select to_date ('1970-01-01 00:00:00 ', 'yyyy-mm-dd hh24: MI: ss') +3600000/86400000 as timestamp from dual   Timestamp -------------------

Recently, we have implemented a project to insert and query database tables with 10 million records. I thought it was easy to insert and query databases. I don't know if the data reaches the level of millions or even tens of millions, it seems quite

Environment: Oracle 11g, win7, 64bit Problem: The software needs to be uninstalled when oracle is not properly installed or re-installed. However, the oracle11g cancels the interface uninstallation and changes to the deinstall. BAT file for

Rose4.0 // Oracle/ifs-file/rose4.0 direct security ORACLE: // Oracle/oracle817/client category copy to local security Ifs: // Oracle/ifs-file/client?????? //Oracle/ifs-file/fnd301Copy to local machine separately Crystal repost: //

  System Environment: window7 + Oracle10g + PL/SQL 8.0   Problem description: 1. After oracle is installed and the service is started, PLSQL cannot be used to connect to the database. The interface is blank. 2. Use sqlplus to connect to the

1. logical and physical structure of the database: Oracle logically divides the database into a smaller units to manage, store, and retreive data efficently. tablespace/blocks/extents/segment/ there are four types of segment: data segment, index

In query rewrite, we can see that this technology is inseparable from one thing, the materialized view, mview for short. this is the first Technology launched by Oracle in 8i. In addition to using query rewrite, mview also plays an important role in

--------------------- The following is the Oracle database ----------------------------- SQL statement Optimization Methods: 30 examples We often use hint in the SQL statement optimization process. Here we summarize the common Oracle hint usage in

After the 11g was installed, Em was never used. last night and this evening, we finally took time to start em. We also encountered a small problem,     1. Some em configuration commands   Create an EM DatabaseEmca-repos createRebuilding an EM

Ora-0103 problems ORA-1034 Oracle not available   Online pick to solve Oracle ora-0103 problems: For reference Every DBA in the Process of database management should inevitably encounter a variety of errors (ORA-1547, ORA-904, ORA-1578......). Some

Rank () sorts data in a table hierarchically.For example, student_resultName number Kemu fenshuLi 0113101 High 90Zhang 0113098 high 80Wang 0113077 High 70Li 0113101 physical 80Zhang 0113098 physical 90Wang 0113077 physical 70 If I want to retrieve

Now I have been using the Ubuntu System for my work. I used to use Widnows to connect Oracle client to the SAP background oralce database. If you don't want to install another Windows server, you have to try the Ubuntu client. First, go to the

I. Case Study　　 A database has two tables about employee information, salary, and department information of a company. They are EMP and dept tables. The structure of the two tables is as follows: 　　 The requirements are as follows: 　　 1. Create a

This article is excerpted from the summary report of xuanjicang Yishi's ERP system optimization project for a listed company, hoping to help you. In a 32-bit operating system, the upper limit of memory used by the Oracle system theoretically is 4 GB,

Object Persistence means that this object can be permanently saved. The persistence here is not only the object itself, but also its attributes and other dependent classes. Objects can be persisted to files or databases. Here I will only describe

Preface In the past decade, Oracle has become one of the world's most professional databases. For IT experts, it is to ensure that their company's productivity is improved by leveraging the powerful features of oracle. One of the most effective

Java code calls the stored procedure and uses multiple database connection methods when passing in array parameters. Here I use: C3p0 connection pool, spring 2.5, Hibernate 3.2.3 But this exception always exists,   Java. Lang. classcastexception:

  Detailed description of Oracle large database systems on AIX/Unix: 23. manual management of automatic workload archives (AWR)   1. Use APIs to manage snapshots and metric baseline data You can also use the dbms_workload_repository package to