You should also set the flyway.locations parameter to the directory or directories where you want Flyway to look for migrations.įlyway works with two types of migrations:Ī versioned SQL migration is a SQL script named in accordance with the Flyway standard: You need to download the ojdbc7.jar file from OTN ( ) and place it in the /drivers subdirectory under your Flyway installation. For example, to connect to my Oracle database, I use comes with a number of database drivers, but the Oracle JDBC driver is not included. The file contains examples of connect URLs for many databases. To avoid having to enter your password every time, you can also set flyway.password. In this file, you should set the flyway.url parameter to connect to the desired database and er to identify the schema you want to work with. In the installation directory, you find a /conf directory containing a nf file. The command-line tool simply needs to be unzipped and run. It is easiest to get started with Flyway using the command-line tool. The second info command shows that my script was successfully run. When I execute the migrate command, Flyway automatically creates its metadata table and then runs my script. The first info command shows that Flyway has found my script, identified it as version 1.1 based on the file name, and determined that it has not been run yet. In this example, I have configured my schema and database connection in the Flyway configuration file – I can also provide username, password and connect info on the command line. Successfully applied 1 migration to schema "DEV2" (execution time 00:00.100s). Migrating schema "DEV2" to version 1.1 - create events Successfully validated 1 migration (execution time 00:00.004s)Ĭreating Metadata table: "DEV2"."schema_version" | Version | Description | Installed on | State | If I have an empty schema and a single script called V1.1_create_events.sql in the Flyway location in the file system, running Flyway on the command line can looks like this: Tahoe:flyway-4.1.1 sten$ flyway info You tell Flyway where you keep your scripts (in the file system or on the classpath), and Flyway then automatically scans those locations for migrations. An SQL migration is simply a script, while a Java migration is a class that implements the. interface. Most of your migrations will be written in SQL, but Flyway also supports Java-based migrations to handle BLOB and CLOB changes. The benefit of Flyway goes out the window if you start running scripts outside Flyway, because this will cause Flyway to get out of sync with the database state.įlyways calls every script a migration. To use Flyway, you name your database build scripts in accordance with Flyway’s conventions and then always use Flyway to build the database. In your build tool (Maven, Gradle, Ant, sbt).To keep track of these migrations, Flyway creates a metadata table in your schema that it uses to keep track of which scripts have been run in that schema. Instead, Flyway migrates application schemas from one version to the next. Flyways talks of “migrations,” but it does not help whole database migration as in the “from 11c to 12g” sense, nor in the “Oracle to SQL Server” sense. Flyway is compatible with Oracle, SQL Server, DB2, MySQL, PostgreSQL and many others.įlyway is an open source database versioning tool. Fortunately, the open source, cross-database tool Flyway ( ) can help you. With the increasing use of DevOps and continuous delivery, the pain of managing database schema versions is growing. We’ve always had features to version our code, but it’s been harder to version the objects in our databases.
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