It actually happened last month. It took a week to migrate the project database from MongoDB to PostgreSQL. The reason and process of migration are briefly described here. Because the project has not been launched, the business logic cannot be too detailed. The reason for migration has seen a lot of complaints over the past few months, mainly because of its memory usage.
It actually happened last month. It
Sometimes we need to migrate the database from the development environment to the production environment. Now we only need to migrate an empty database (including the table structure, the data (usually the test data during development) is not required.
You can use the tools provided by PostgreSQL. The procedure is simple:
1) Pilot Database ExportThe command is
third-party migration tool to only migrate table data-> after migration to redeploy the CADS server to the target database. For CADS, redeployment is very simple. Therefore, using this solution for data migration can avoid potential problems caused by data types.
Currently, the architecture of many applications is similar to CADS, which requires you to consider how to use a third-party migration tool to only migr
As we all know, it is not easy to migrate a database from a higher version of Oracle to a lower version of oracle. If you directly use the SQL developer tool, you may not be able to complete the migration successfully (errors may occur more or less in the middle ).
Exp and IMP are applicable to Oracle data copy and bac
How to migrate data between oracle and mysql ?, Oracle MySQL migration?
Recently, some of my friends have encountered some problems. How can oracle be converted to mysql? Today, I am here to teach you how to switch
First, you need to download a tool navicat premium. (If you don't have any friends, you can search and
Comparison of Oracle, mysql, sqlserver, and postgresql statements, postgresql and oracle
1. Paging
Oracle:SELECT * FROM (select a. *, rownum rn from (select T. * from sj_receiptinfo t WHERE t. taxno like concat ('%', CONCAT (?, '%') Order by t. id desc) a where rownum
Mysql:Select * from tableName where ConditionLimi
How to migrate part of Oracle Database to flash storage
Environment: Oracle 11.2.0.4 RAC (2 nodes)
Note: If the new flash mount point is/flash (a third-party cluster file system is used), if the Oracle ASM is used, all the/flash directories mentioned in this article can be regarded as the new FLASH disk group + flash.
It may be necessary to switch to different databases frequently because of work requirements. Let's take a look at how to migrate MySQL Data to Oracle.
It may be necessary to go through different database tutorials frequently because of work requirements. Let's take a look at how to migrate MySQL Data to Oracle.
Beca
How to migrate MySQL data to Oracle [figure] bitsCN.com
For project reasons, I tried to migrate the mysql database content to oracle tonight. although the results failed, I learned a lot and it won't be necessary next time. hahaBecause the previous project used the mysql database, and now the new company requires
The disk of the customer's 32-bit Oracle database system is damaged. Fortunately, the Oracle database is intact. The customer requested to migrate the database to the newly purchased device. The memory size of the new device is 64.
The disk of the customer's 32-bit Oracle database system is damaged. Fortunately, the
Migrate Oracle database files to ASM
Read navigation
Migrate data files to ASM
Migrate log files to ASM
Migrate control files to ASM
Migrate data files to ASM
Database migration in the case of Database Consistency: Start the
.ctlSQL> select name from v $ controlfile;
NAME--------------------------------------------------------------------------------/U01/app/oracle/oradata/prod/control01.ctl/U01/app/oracle/oradata/prod/control02.ctl/U01/app/oracle/oradata/prod/control03.ctl
B. view the db_create_file_dest parameters.SQL> show parameter db_create_file_dest;
NAME TYPE-----------------
Migrate MySQL to Oracle (1) 1. Introduction
As you may imagine, migrating a database and using its applications is not a small matter. A lot of work is required to migrate the database platform and the applications that use it. In this two-part document, we will discuss all the steps around this process and ask yourself what you should pay attention, and how to
Two days ago, the leader gave a live migration to the database. The original system was using the Oracle database and now it was going to be changed to MySql. At that time, I did not think much about it. The original system used the Frame Type SSI, so I thought about the following adjustments:
First database migration
Second application modification
The following describes the process in detail.
1. database migration
Simply put, it is to
Tags: Oracle databaseWe often need to migrate data, migrate to more advanced hosts, migrate to remote rooms, migrate to different platforms ...First, Exp/imp: This is the most commonly used the simplest method, is generally based on the application of the owner-level to do e
I have compiled several blogs about migrating a single instance from 32-bit to 64-bit:
Oracleconverta 32-bit database to 64-bit database (32-bit to 64-bit) Description
Http://blog.csdn.net/tianlesoftware/article/details/7252742
Migration of a single oracle instance from 32-bit to 64-bit (1) -- direct copydatafiles
Http://blog.csdn.net/tianlesoftware/article/details/7258654
How to migrate a single
follows
Copy Code
-If you are migrating a oracle9i database, execute the following command:Sql> STARTUP MIGRATE-If it is oracle10g or 11g, execute the following command:Sql> STARTUP UPGRADESql> SPOOL EASY.log;sql> @ $ORACLE _home/rdbms/admin/utlirp.sqlSql> SPOOL off;
8: Restart the database,
9: If the database has an OLAP component, delete OLAP, and the SYS user executes the fo
Migrate the oracle database from the 32-bit platform to the 64-bit, oracle32-bit
The disk of the customer's 32-bit oracle database system is damaged. Fortunately, the oracle database is intact. The customer requested that the database be migrated to the newly purchased device. The memory of the new device is 64 GB, and
Oracle 9i provides powerful migration functions to migrate data from multiple databases to Oracle. The new Oracle migration tool provides a simple solution for migrating data from Access 2000 to Oracle 92010. This solution overcomes Chinese garbled characters and string trun
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