Oracle

How to modify the plsql password? Let's take a look at the plsql password modification method in oracle. I hope this tutorial will help you. Method 1 Enter the following statement in the command line: The Code is as follows: Copy code

First, we will introduce some commands to back up and restore oracle databases without using scripts.Oracle Data Backup:Step 1. Back up user data.1. Use the database administrator account in linux to connect to the linux terminal.2. Execute the

Restore Deleted Data1. Create a simulated environmentCopy codeThe Code is as follows:SQL> create table hr. xifenfei (id number, name varchar2 (20) tablespace xff;Table created.SQL> insert into hr. xifenfei values (1, 'ifenfei ');1 row created.SQL>

-- Method 1: Query dba_tab_columnsCopy codeThe Code is as follows:Select COLUMN_NAME, DATA_TYPE, DATA_LENGTHFrom dba_tab_columnsWhere table_name = upper ('table name ')Order by COLUMN_NAME-- This method requires the DBA permission.-- Method 2: Query

I recently encountered oracle Database Import and Export when I was working on the project. Here I will record it to prevent myself from forgetting it. If anything is wrong or insufficient, you are welcome to make a brick. Haha ~Export command:1)

Before installation:The minimum requirement for memory (RAM) is 1 GB. 2 GB or above is recommended. Recommended virtual memory swap: memory is 1 GB ~ We recommend that you set the swap size to 1.5 times of the memory size for 2 GB. The memory size

The scenario is as follows:-- Create type create or replace type list_obj is table of number; -- create table Structure create table test (name varchar2 (30) primary key check (regexp_like (name, '^ ([a-z] | [0-9] | _) + $'), id number not null,

10046 event can be used for tracking [oracle@ggos ~]$ sqlplus / as sysdbaSQL*Plus: Release 11.2.0.4.0 Production on Fri Dec 20 19:48:00 2013Copyright (c) 1982, 2013, Oracle. All rights reserved.Connected to an idle instance.SQL> startup

Whether the number of real-time connections to a database is stable is an indicator of whether a set of IT systems are stable.This data should be collected and followed when a new system is launched or not strictly tested.I wrote a simple stored

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

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

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

Before giving you a detailed description of free space for Oracle tablespaces, let us first understand the free space for Oracle tablespaces, and then fully introduce the free space for Oracle tablespaces. In Oracle databases, DBAs can observe

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  

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

Oracle has a lot to learn about. Here we mainly introduce the Oracle driver table, including the usage of hints. CBO selects the Oracle driver table based on the statistical information. If no statistical information is available, select the Oracle