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When you use the explain tool to view the execution plan of the SQL statement, if ldquo; DEPENDENTSUBQUERYrdquo; appears in the select_type field, you must note that you have When you use the explain tool to view the execution plan of the SQL

When exporting mysqldump: Couldn When exporting mysqldump: Couldn Homepage → Database Technology Background:Read News During mysqldump export: Couldn't execute 'set OPTION SQL _QUOTE_SHOW_CREATE = 1 ': [Date: 2014-10-27] Source:

MySQL 5.1 installed through yum in CentOS6.5 is old, so you want to install the higher version 5.6.20 through the source code. MySQL 6.5 installed through yum in CentOS 5.1 is old, so I want to install the later version 5.6.20 through the source

Today I upgraded Oracle Database 10.2.0.1 to 10.2.0.5, and then started the database with an error: ORA-01092: ORACLEinstanceterminated. Disconnectio Oracle Database 10.2.0.1 was upgraded to 10.2.0.5 today, and then an error occurred while starting

Scenario: 1. archive is enabled for the database; 2. All archived logs are online after the data file is created; 3. No backup is performed for the data file or tablespace, and no full database backup is performed for the database. Scenario: 1.

This document describes how to create an Oracle database that complies with the OFA specification using the createdatabase command of the Oracle database. This document describes how to create an Oracle database that complies with the OFA

I am used to installing MySQL in binary format. Today I am eager to install an RPM package for MySQL to play. I did not expect that I encountered some problems. I will share with you the problems I encountered first. I am used to installing MySQL

If an error occurs in Oracle, go to the error log to find the root cause: locate oracle_ora_6320 in the e: appkangdiagrdbmsoracleoracletrace folder. If an error occurs in Oracle, go to the error log to find the root cause: locate oracle_ora_6320 in

The previous article Sqoop1.4.4 import incremental data from Oracle10g to Hive0.13.1 and update the master table in Hive describes the principle of incremental update of Hive tables and Sq The previous article Sqoop1.4.4 import incremental data from

Although deleteinput is configured in the script to delete the archive after the archive is backed up, to reduce the disk space occupied by the archive, you can see in the backup log of the RMAN script, from January 1, August 3 Although the archive

Multiple processes can work together to create indexes. Compared with an index created by a single server process in sequence, you need to allocate the work required to create an index between multiple server processes, Multiple processes can work

CREATEGLOBALTEMPORARYTABLETABLENAME (COL1VARCHAR2 (10), COL2NUMBER) ONCOMMITPRESERVE (DELETE) ROWS; -- O Create global temporary table tablename (COL1 VARCHAR2 (10), COL2 NUMBER) on commit preserve (DELETE) ROWS; -- O Create global temporary

The original Oracle database server uses rman to back up the entire database, and then restores the same database on the remote server. The original Oracle database server uses rman to back up the entire database, and then restores the same database

The company set up a slave uard. At the beginning, it did not pay attention to the management of archiving logs in the slave database. After the system was running for a while, it was found that the space of the slave database was cracked up by

Today, we will paste an Oracle database backup feature that has been implemented very early. This feature was designed at the university stage: Today, we will paste an Oracle database backup feature that has been implemented very early. This feature

As long as the database is in the OPEN state, other tablespaces except the SYSTEM tablespace can be set to online or offline. The reason why the SYSTEM tablespace cannot be set to As long as the database is in the OPEN state, other tablespaces

When switching the role of the logical standby database switchover, the following error message is displayed in the log when the database is started, which is recorded; primarygt; startupOraclei When switching the role of the logical standby

Neo4j is currently the mainstream graph database. It also provides highly available cluster solutions. This article will try to build a highly available Neo4j environment. Neo4j is currently the mainstream graph database. It also provides highly

With regard to dual table destructive testing, since it is a destructive test, it needs to be determined that this test is only used for testing or personal learning. Some SQL statements may seem extremely simple, but once With regard to dual table

A customer database in the inspection of the alert Log will appear occasionally ORA-609 error, because of the ORA-609, ospid (xxxx) process is aborting, but also A customer database in the inspection of the alert Log will appear occasionally ORA-609