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Oracle learning notes first knowledge Oracle, oracle learning notes first KnowledgeDatabase Introduction A Database is a warehouse that organizes, stores, and manages data according to the data structure. SQL is the acronym of Structured Query Language (Structured Query Language.Definition DatabaseTo put it simply, it can be regarded as an electronic file cabin
can be used for version 10G or later. Streams stream replication. Create Table As Select (CTAS) Dataguard is a physical Master/Slave Database Based on heterogeneous platforms. Oracle Golden Gate. Each available option has its advantages and limitations, including the data type, time required, and potential costs.The advantages and disadvantages of available options depend on the source and target oper
First, set a user group for the normal installation of oracle; [Root @ localhost ~] # Groupadd oinstall[Root @ localhost ~] # Groupadd DBA A user account is called Oracle, and a group is called oinstall and DBA. [Root @ localhost ~] # Useradd-G oinstall-g dba Oracle[Root @ localhost ~] # Passwd Oracle This is a
Preparation: Confirm that the object and statement can be supported by standby Ensure that the rows of each table in the primary database can be uniquely identified. Environment: Operating System: red hat linux enterprise 5 ORACLE: 11.2.0.1.0 PRIMARY: IP: 192.168.1.11 SID: test DB_UNIQUE_NAME: test Installation path:/oracle/product/11.2.0/dbhome_1 Local archive path:/or
;wFDISK/DEV/SDG--> N-->p-->1-->1-->wFDISK/DEV/SDH--> N-->p-->1-->1-->w5. This article uses the ASM disk in a udev way, without using Asmlib. /sbin/scsi_id-g-u-d/dev/sdf /sbin/scsi_id-g-u-d/dev/sdg /sbin/scsi_id-g-u-d/DEV/SDH such as: [roo T@ol6-121-rac1 dev]#/sbin/scsi_id-g-u-d/dev/sdf 1ata_vbox_harddisk_vba36c3c6c-9da6bb20 [Root@ol6-121-rac1 dev]#/sbin/scsi_id-g-u-d/DEV/SDG 1ATA_VBOX_HARDDISK_VBCB790F45-DE2F86FB [Root@ol6-121-rac1 dev]#/sbin/ Scsi_id-g-u-d/DEV/SDH 1ata_vbox_harddisk_vb4
Oracle client + PLSQL Developer remote login to Oracle database, oracle client plsql Oracle databases have powerful functions and excellent performance. These advantages also result in a large amount of memory occupied by Oracle. To address this problem, how can we extract t
When Oracle is not installed on the computer, C # Calls oracle database and Oracle customer tools, The installation packages of Oracle are usually relatively large and time-consuming. If errors occur during the installation process, the installation may be quite annoying. At work,
Tags: OracleSet power on (Linux) auto-start Oracle shutdown automatically shuts down Oracle1, switch to the root user, confirm that the startup file and the shutdown file is present[Email protected] bin]$ pwd/u01/oracle/product/10.2.0/db_1/bin[[email protected] bin]$ ls DbstartDbstart--sqlplus script to invoke when executing startup[[email protected] bin]$ ls DbshutDbshut--sqlplus the script to invoke when
occur whenever the buffer cache is permanently recorded in the database, Updates the database state information in the control files and data files. Archiving process: To back up or archive a full log group during each log switch: User accessProcess services. User process: At the client, responsible for passing the user's SQL statement to the service process and getting the query data back from the server segment. 5. Oracle Routines: The
The Dataguard configuration is as follows: Prod main library, sbdb for standby Log Group 1-3 Group is Redolog file,4-6 Group is standby log During the creation of the standby log library, the recovery from the data transfer to the standby is performed using the cold standby tar package. After the DG configuration is complete, the standby alert log has an error following the start of the repository: Errors in FILE/U01/APP/
Oracle redo complexity-oracle Core Technology Reading Note 3, redo-oracle I. Overview We know that in oracle, Every modification to a piece of data generates a redo (that is, redo, which records the modified content ). The purpose is to back up the modified data for future redo. Now there is a problem. Redo logs are ge
Because of the installation of Oracle 10G when there was a problem, and then asked roommates to send a copy of the Oralce 10g client installation package came up. It was possible to use Pl/sql, and then, in the case of a job need, to import an Oracle database backup from a colleague at a time, making IMP statement to import a 6550 error, the internet to check the reason is because the server and the clien
DATAGUARD configuration is as follows: PROD is the master database, SBDB is the slave Database 1-3 log groups are redolog files and 4-6 log groups are standby logs. After the standby log is created, the master database closes the database and uses the cold backup tar package to transmit data to the backup database for recovery. After the DG is configured and the slave database is started, the alert log of the slave database reports the following error
[Oracle Notes] 2. Oracle Server entry and Oracle management routine [Oracle Notes] 2. Oracle Server entry and Oracle management routine Oracle Server entry and
Some time ago I started to learn some basic knowledge about oracle. To facilitate exercises and operations, I installed an Oracle 10 Gb. After the installation is complete, the current database is directly deprecated. The card is terrible. The card can only be used for surfing the Internet. At that time, I was too busy to do anything else, so I never care about it. Together with the last Internet cafe. Thes
When the hardware is maintained, someone accidentally disconnected the power supply from the production library, and after restarting the enclosure and server, an Oracle 10g 10.2.0.4 startup error message appears: The code is as follows 1 Database loading complete.ORA-01122: Database file 1 validation failedORA-01110: Data file 1: ' E:\ORACLE
Oracle Data Guard is an important component of the Oracle HA Architecture system and a key technical solution for Maximum Availability Architecture. With the Switchover and Failover features of Data Guard, we can achieve high availability requirements for O M systems and minimize planned and unplanned downtime.Data Guard is built on the Database software and hardware and Data redundancy policies. It builds
Method 1: As you all know, to connect to Oracle using PL/SQL, you need to install the Oracle client software. Have you ever wondered whether to directly connect to Oracle without installing the Oracle client? In fact, I always wanted to do this, because this client is so annoying !!! Not only will JDK be installed, but
Method 1: As we all know, to connect to Oracle using PL/SQL, you need to install the Oracle client software. Have you ever wondered whether to directly connect to Oracle without installing the Oracle client? In fact, I always wanted to do this, because this client is so annoying !!! Not only will JDK be installed,
Oracle how to ensure the ACID principle of transactions -- oracle Core Technology Reading Note 2, acid -- oracle There are four general principles in the transaction that all databases must comply with, referred to as the ACID principle. The following briefly describes how oracle implements these four principles. 1. A
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