Oracle

Oracle logs include online redo log and archived log. Online redo log:A database must have at least two groups of redo logs, and each group of redo logs must have at least one member (for security reasons, we recommend that each group of redo logs

Today, we see another heavyweight Oracle Publishing House: powerful Oracle Database 10g security by design. The books in the tive series have always been favored by readers. This book should add an important note to Oracle's "indestructible Database.

1. startup nomount For non-installation startup, execute re-build the control file and re-build the database to read init. ora file, start the instance, that is, start the SGA and background processes. ora file. 2. startup Mount dbname Install and

    In the afternoon, my colleague conducted the grant authorization operation and executed the following command to hold the account. After waiting for N, the task was not completed for a long time: SQL> grant select on ur_user_info tohfyd;   Check

-------- Creating physical standby database --------------------------------------- Settings for the primary database -------------------------------- 1. Enable forced LoggingAlter database force logging; 2. Create a password fileOrapwd file = orapw

I. Hardware requirements1. Check physical memory requirements (> = 256 MB)[Root @ centos ~] # Grep memtotal/proc/meminfoMemtotal: 1554748 KB 2. Check Virtual Memory RequirementsRam 1-2 GB: swap 1.5 * RamRam 2-16 GB: swap = RamRam> 16 GB: swap 16

Oracle user access control 1. PermissionsOracle Database Security is divided:System SecurityData security System permission: database access permissionObject permission: operations on the Content of database objects Schema: a collection of objects.

DDL statementDatabase objects: tables, views, sequences, indexes, synonymsNaming rules for database objects:-It must start with a letter.-No more than 30 characters-A-Z, A-Z, 0-9, _, $ ,#-Duplicate names of objects in the same schema and other

Restrictions on the Use of sequence objects in OracleNextval and currval are valid only in SQL statements and not directly in SPL statements. (However, SQL statements using nextval and currval can be used in SPL routines) The following restrictions

Description of the concept of automatic workload Repository Automatic workload repository (AWR) collects, processes, and maintains Performance Statistics for problem diagnosis. The data is stored in both the data block and the memory. The data

The customer reported an error ORA-29280 for jobs that run automatically in the 11.2.0.3 RAC environment. Detailed error message: Sat Sep 05:59:59 2012Vkrm started with PID = 54, OS id = 32622Sat Sep 06:00:09 2012Errors in

When I used dbca to create a database tonight, I entered the following interface and drove the machine to take a bath. After the shower, I found that the progress bar was still 2%, and I felt something was wrong. So I went to the Installation Log

In Windows:   C: \ Documents ents and Settings \ Administrator> C: \ Documents ents and Settings \ Administrator> C: \ Documents ents and Settings \ Administrator> exp user/password @ Oracle tables = Table1 rows = y indexes = y compress = y buffer =

If the Oracle program does not grow according to the sequence set by hibernater. You can try this. Add allocationsize = 1 to @ sequencegenerator.  @ Sequencegenerator If you use @ generatedvalue annotation to specifySEQUENCEType primary key

This article introduces some basic concepts of Oracle execution plans for learning and application. 1. Related Concepts The concept of rowid: rowid is a pseudo column. Since it is a pseudo column, this column is not user-defined, but added by the

This document describes how to create an Oracle Auto-increment field. Description: sets the ID of the pipe_test field in the test record table to an auto-increment field. Pipe_test table structure SQL> DESC pipe_test; Name type nullable default

[Q] how to capture user logon information, such as Sid and IP address [A] logon triggers can be used, as shown in figure Create or replace trigger tr_login_record After logon Database Declare Miusersid number; Mtsession v $ session % rowtype; Cursor

Oracle SQL optimization rules: Use the in operator as few as possible. Basically, all in operators can be replaced by exists. The SQL statements written in are easier to write and understand, but the SQL statements written in always have low

Document directory Connection to Oracle database with myeclipse Connection to Oracle database with myeclipse When myeclipse Database Explorer establishes an Oracle database connection, no matter which Oracle JDBC driver package (classes12

  Sorting: fenngDate: 25--200-2004Source: http://www.dbanotes.netVersion: 0.91 Sometimes, as a DBA, you may need to collect information about the deployed Oracle database. Hardware configuration, operating system conditions, software installation