Oracle

1. Waiting for monitoring cases Select event, sum (decode (wait_Time, 0, 0, 1) "Prev ",Sum (decode (wait_Time, 0, 0) "Curr", count (*) "Tot"From v $ session_WaitGroup by event order by 4; 2. rollback segment contention Select name, waits, gets,

1. move the cursor to the beginning of the content you want to copy.2. Press the left mouse button with the right index finger3. Drag the mouse to the other corner of the content to be copied, just like the method used to select the content in Word.4

I. INDEX usage Problems 1. Is INDEX used or not? This is a problem. Whether full table scan or index range scan mainly considers the SQL query speed issue. Here we mainly focus on the number of records read. According to donald k. BURLESON, the

SOA is a hot topic nowadays. Many companies have successively launched their own SOA products, and Oracle is no exception. Here I will introduce the Oracle SOA Suite 10.1.3.1 preview. Although the official version will be available in two months, I

Oracle uses PASSWORD_REUSE_TIME and PASSWORD_REUSE_MAX in PROFILE to determine whether the password can be reused and the restrictions on Password reuse. However, after testing, I found that the description in the Oracle administrator guide is

Brian Peasland, an independent Oracle Database consultant and a special backup, recovery, and database design expert at SearchOracle.com, has a full understanding of Oracle databases. It took several days to help companies and individuals make full

I have a SUN 450 server in our company. The disk of the Oracle8 database is damaged. I need to replace a new disk, reinstall the Oracle database and backup software, and recover it from the backup server. Check the original data storage environment

Oracle today announced the launch of the Oracle CRM network tool for Sales personnel (Oracle CRM Gadgets for Sales ), the first new Oracle CRM network tool helps users securely access enterprise application data and services, it also integrates

After Oracle Releases PL/SQL and Java application programming interfaces (APIS), the click tool or builder that can use the newly released APIs will be launched on the market, this is generally the best practice. With this practice, developers can

The following is only the information obtained by reading the document. Everything may change before 11gR2 is officially released. 1. RMAN Web-Services BackupOracle now allows direct backup of databases to Amazon S3 or other cloud computing storage

When learning about Oracle, you may encounter the UNDO tablespace problem in Oracle. Here we will introduce how to solve the UNDO tablespace problem in Oracle. Here we will share it with you. The UNDO tablespace is used to store UNDO data. When you

Here we will introduce the steps for unlocking Oracle, including the specific code and operations. I hope this article will help you in Oracle database management. from v$locked_object t1,v$session t2  

Here we will introduce how to unlock Oracle. After being locked, we can also use some tools to unlock it. Let's take a look at how Oracle can be unlocked. During database operations, database tables are sometimes locked due to improper operations,

After a long period of development in Oracle, many users are familiar with the Oracle transmission tablespace. Here I will share my personal understanding and discuss it with you. Sometimes, exp can be used to export the tablespace through

What should I do if my Oracle password is lost? The following two methods are provided for your reference. The methods described in this article may also be omitted due to different Oracle versions. Solution 1: sqlplus "/ as sysdba" 

When learning about Oracle, you may encounter the Oracle user tablespace problem. Here we will introduce the solution to the Oracle user tablespace problem. Here we will share with you. In fact, it is to create a new account on an existing database

After a long period of development in Oracle, many users are familiar with Oracle database adjustment. Here I will share my personal understanding and discuss it with you. The Oracle database is adjusted in the Oracle database operation phase. The

Oracle is still quite common, So I studied Oracle selectivity. This article compares the number of unique keys in the column and the number of rows in the table to determine the Oracle selectivity of this column, I would like to share it with you

Oracle is still quite common, So I studied how to generate an execution plan for Oracle. Here I will share it with you and hope it will be useful to you. How Does Oracle generate an execution plan? There are three methods to generate an execution

After a long period of learning about Oracle table connection, I would like to share with you that you have certainly gained a lot after reading this article. I hope this article will teach you more things. Join is a predicate that tries to combine