[[["容易理解","easyToUnderstand","thumb-up"],["確實解決了我的問題","solvedMyProblem","thumb-up"],["其他","otherUp","thumb-up"]],[["難以理解","hardToUnderstand","thumb-down"],["資訊或程式碼範例有誤","incorrectInformationOrSampleCode","thumb-down"],["缺少我需要的資訊/範例","missingTheInformationSamplesINeed","thumb-down"],["翻譯問題","translationIssue","thumb-down"],["其他","otherDown","thumb-down"]],["上次更新時間:2025-08-18 (世界標準時間)。"],[],[],null,["# Create and configure your destination Cloud SQL instance\n\nFor heterogeneous Oracle migrations to Cloud SQL,\nDatabase Migration Service requires that you first create and configure your\nCloud SQL destination instance. Perform the following steps:\n\n1. Create your destination instance. Make sure you configure enough compute and memory resources to cover your migration needs and follow the requirements listed in [known limitations](/database-migration/docs/oracle-to-postgresql/known-limitations).\n\n We recommend that you create your destination instance with settings\n specific to the\n [destination networking method](/database-migration/docs/oracle-to-postgresql/networking-methods-destination) you want to use:\n\n2. Create the following entities in your destination instance:\n - A [database to migrate your data](/sql/docs/postgres/create-manage-databases).\n - A [dedicated migration user account](/sql/docs/postgres/create-manage-users#creating).\n3. Grant the required permissions to the dedicated migration user account. Do the following:\n 1. Connect to your Cloud SQL instance with a SQL client. You can use the following methods:\n - [`psql` client](/sql/docs/postgres/connect-admin-ip). You can use this method to connect to your instance private IP, but it might require that you create a Compute Engine virtual machine.\n - [`gcloud sql connect`](/sdk/gcloud/reference/sql/connect) command. This command works only for Cloud SQL instances that have a public IP address enabled.\n 2. Run the following command on your destination instance: \n\n ```sql\n GRANT CREATE ON DATABASE DESTINATION_DB_NAME TO \"\u003cvar translate=\"no\"\u003eMIGRATION_USER_ACCOUNT_NAME\u003c/var\u003e\";\n ```\n 3. Optional: Grant your migration user the `CREATEDB`\n permission for the purposes of testing converted schema.\n\n At a later point in the migration, after you\n [convert the source schema](/database-migration/docs/oracle-to-postgresql/convert-sql), you can use Database Migration Service\n to test whether converted schema can be applied to a PostgreSQL\n database. To perform the test, Database Migration Service creates a temporary\n database to avoid impacting your destination database.\n If you want to\n [test your converted schema](/database-migration/docs/oracle-to-postgresql/work-with-conversion-workspaces#test-apply-to-dest),\n grant your migration user the `CREATEDB` permission.\n Use the following command: \n\n ```sql\n ALTER USER \"\u003cvar translate=\"no\"\u003eMIGRATION_USER_ACCOUNT_NAME\u003c/var\u003e\" WITH CREATEDB;\n ```\n 4. **For source databases that contain foreign keys or triggers** : Skip replication for foreign keys and triggers by using the [`REPLICATION`](https://www.postgresql.org/docs/current/role-attributes.html#id-1.6.9.6.2.1.5.1.1) option with the dedicated migration user account. Run the following command: \n\n ```sql\n ALTER USER \"\u003cvar translate=\"no\"\u003eMIGRATION_USER_ACCOUNT_NAME\u003c/var\u003e\" WITH REPLICATION;\n ```\n\n For more information about how Database Migration Service migrates foreign keys\n and triggers, see\n [Considerations for foreign keys and triggers](/database-migration/docs/oracle-to-postgresql/known-limitations#foreign-keys-triggers-considerations).\n\nWhat's next?\n------------\n\n- Learn about destination database network connectivity. See\n [Destination database networking methods](/database-migration/docs/oracle-to-postgresql/networking-methods-destination).\n\n- Learn about migration jobs. See [Create a migration job](/database-migration/docs/oracle-to-postgresql/create-migration-job)\n\n- To get a complete, step-by-step migration walkthrough, see\n [Oracle to Cloud SQL for PostgreSQL migration guide](/database-migration/docs/oracle-to-postgresql/guide)."]]