Oracle

When importing data to the Orale database ORA-01658: Unable to create a INITIAL area error for the segment in table Space XXX. Oracle I initialize the size of 200M when creating a table space, when the amount of data in the database reaches this

I. Structure of the database Second, Oracle memory structure III. structure of the process 1. User process: Start when the database user requests to connect to the Oracle server 2. Server process: You can

Oracle involves a table query statement, if it is the first execution, which is hard parsing, the steps that need to be performed are the following: Tables #Queries Purpose access$ 1 Permissions used by a dependent object against its parent ccol$

Index uniqueness Scan (Index unique SCAN) (scan for UNIQUE index) the Peso range Scan (index unique SCAN) requires a minimum of 1 logical reads, because the index unique row scan is clear that only a maximum row of data is returned. An index-range

A PRKC-1002 error was encountered while installing Oracle RAC in VMware Server 1.0.8: warning:error while copying directory/u01/oracle/product/ 10.2.0/db_1 with exclude file list ' null ' to nodes ' rac2′. [Prkc-1002:all the submitted commands did

The following is a detailed analysis of several methods for obtaining execution plans in Oracle, which can be referred to under 1. Estimated implementation plan-Explain plansExplain Plan takes the SQL statement as input, gets the execution plans

The following is a detailed analysis of the similarities and differences between lock and latch in Oracle and the need for a friend to reference first, let's talk about what they have in common: They are essentially exclusive locks on resources that

Using Pl/sql developer to enter the user name and password when logging in to the Scott user, it is wrong to ora-28000:the the solution of the account is locked-. Solutions Method One 1 Access with login with Admin ID 2 View the Users node of

Background processes are used to perform the actual maintenance tasks required to keep the database running. For example, a background process maintains the buffer cache and writes the block out to the data file as needed. Another process is

The examples in this article describe the way Python links Oracle databases. Share to everyone for your reference. as follows: Using Python to link Oracle databases requires referencing the Cx_oracle library ? 1 2 3 4 5 6 7 8 9 10 11 1

---Description flash back to the database ---Restore a table's contents to a specific point in time using the flash-back table ---recover from a deleted table ---Use a flashback query to view the contents of a database for any point in time

The Decode function is equivalent to a conditional statement (IF). It compares the input values with the list of arguments in the function, returning a corresponding value based on the input value. The parameter list of a function is a number of

In the Web or in books, it is easy to understand that the life cycle of the Oracle midstream includes the following sections: 1, open the cursor--open cursor, this step applies a piece of memory to the cursor in the UGA, this time the cursor has

Select DISTINCT (t.f_resume_id| | T.f_resume_status), T.f_resume_status,t.f_resume_status,t.f_recruit_channel, t.f_small_channel_id From CSS. T_resume_info T where T.f_resume_status in (80011,80012) Distinct multiple fields, and of course the

You can import the table structure and table data of one or more database tables into the export at the same time by importing and exporting DMP files. Here's how to import and export. First enter the command line, click Start, enter cmd:

Modify the etc/rc.d/rc.local parameter file, and add the following two lines later [Root@linux9 bin]# cat/etc/rc.d/rc.local #!/bin/sh # # This script would be executed *after* all the other init scripts. # You can put your own initialization

Oracle-related distributed data Solutions    may be fading in the cloud, SOA architecture, but it is still practical, this article briefly describes the commonly used data synchronization scenarios, because of the use of advanced replication

One of the best features of Oracle 10g is the consultant Framework (Advisory framework), a collection of tuning consultants that can help you make the most of your database. One of the consultants,--sql Access Advisor (Access Advisor), recommends

Oracle does not distinguish between tables or indexes in the table space, all the tables and indexes can be placed in the same table space when the amount of data is relatively small, but as the volume of data increases, it is best to store the

(Table Space indent script)] --1, get tablespace information that needs to be freed (contains Oracle database own table space) --drop table System.tbs_detail; CREATE TABLE System.tbs_detail as Select A.tablespace_name, a.bytes/1024/1024 "SUM_MB"