aws database migration

During the rapid expansion of Mailbox, one of the performance problems is the MongoDB database-level write lock. the time consumed during the lock wait process directly reflects the latency during the user's service usage. To solve this long-standing problem, we decided to migrate a common MongoDB collection to an independent cluster. We can infer that this will reduce the lock wait time by 50%. At the same time, we can add more shards, and we expect

1>, in the Package Manager console, execute the statement:Pm> enable-migrations-enableautomaticmigrationsAfter execution succeeds, add the Migrations folder to the application code structure, and generate the class file Configuration.cs.2>, in the Package Manager console, execute the statement:Pm> add-migration InitialcreateAfter successful execution, new class files are added in the Migrations folder month and day seconds _initialcreate.cs3>, in the

Tags: export addclass Feedback related operator Execution Extra admin poolThere are more and more databases that need to be migrated. How to measure the database performance before and after has become a difficult point. This article uses the AWR Compare report to solve this problem. The following are test library contentsEnvironment description SID DBID OS Description Finally 4033498616

change it to the MySQL database Access code. After completing the above two steps, the Access database migration is basically solved. Next, you can carefully test the software system to minimize errors caused by database migration. In addition, there are other ways to migra

In essence, oop application systems are composed of types. In. net, classes are provided by the Assembly, and an application system is composed of a bunch of assembly, some of which are. NET framework is provided, some are provided by third parties, and the rest is custom assembly. An application system built based on the osgi. Net plug-in framework is composed of plug-ins. Each plug-in consists of a plug-in assembly and a plug-in list file description. This article is divided into the following

use the dbset//To avoid creating duplicate seed data. e.g. // //context. People.addorupdate (//p = p.fullname,//new Person {FullName = "Andrew Peters"},//new Person {FullName = "Brice Lambson"},//new Person {FullName = "Rowan Miller"}// ); // } }}2>, in the Package Manager console, execute the statement:　　Pm> add-migration Initialcreate　　After successful execution, add the class file in the Migrations folder 2013092

In general, it is impossible to avoid any problems during the migration of DB2 database applications. This article will introduce some problems that may occur during the migration of DB2 database applications. BKJIA has previously introduced how to combine Oracle Data in DB2. Hope to help you. I have worked as an engin

constructor of the class file PortalContext.cs to remove the setting that removes the current database from rebuilding the new database when the database model has changed.Static Portalcontext () { database.setinitializer1>, in the Package Manager console, execute the statement:Pm> enable-migrations-enableautomaticmigrationsAfter successful execution, add the

TABLE chained_rows;Analyze table test list chained rows into chained_rows;Select Table_name,count (*) from chained_rows GROUP by TABLE_NAME;Because the table space has just been made a move, the index of test takes effect and requires rebuilding the index.Alter index IDX_TEST_ID rebuild;Set Autotrace traceonly statistics; Select/*+ Index (TEST,IDX_TEST_ID) */* from Test;Sql> Select/*+ Index (TEST,IDX_TEST_ID) */* from Test;107 rows selected.Statistics--------------------------------------------

is inconsistent, in the software system requires careful review of the code, replace the MySQL database access code. Complete the two steps above, basically solve the Access database migration construction problem, next you can carefully test the software system, minimize the database

Database migration: Linux-32 to Linux-64 (10.2.0.4) Database migration: Linux-32 to Linux-64 (10.2.0.4) I. Environment Description Source database: Operating System: LINUX 32-bit Database: Oracle 10.2.0.4.0 32-bit Target

Microsoft introduced a new tool to help MySQL users migrate their data to Microsoft's SQLServer database. This tool is called the SQL Server migration assistant (SSMA ). M Microsoft introduced a new tool to help MySQL users migrate their data to Microsoft's SQL Server database. This tool is called the SQL Server migration