[[["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：2025-09-01 (世界標準時間)。"],[[["\u003cp\u003eHeterogeneous migration involves moving data between different database technologies, such as from Oracle to PostgreSQL.\u003c/p\u003e\n"],["\u003cp\u003eThese migrations are complex due to variations in schema, data types, and metadata between the source and destination databases.\u003c/p\u003e\n"],["\u003cp\u003eDatabase Migration Service offers tools like Gemini-assisted schema and code conversion to aid in adapting the source database's format to the destination database.\u003c/p\u003e\n"],["\u003cp\u003eChange Data Capture (CDC)-based replication is employed in heterogeneous migrations to manage ongoing data changes.\u003c/p\u003e\n"],["\u003cp\u003eDatabase Migration Service supports specific heterogeneous migration scenarios, including Oracle to Cloud SQL for PostgreSQL and Oracle to AlloyDB for PostgreSQL.\u003c/p\u003e\n"]]],[],null,["# Heterogeneous migrations\n\nA heterogeneous migration moves data between different database technologies.\nThe database engine of the source, such as Oracle differs from the database\nengine of the destination, such as PostgreSQL.\n\nHeterogeneous migrations are more complex than homogeneous migrations due to\ndifferences in schema structure, data types, and metadata components between the\nsource database and the destination database. Database Migration Service provides tools,\nsuch as Gemini-assisted schema and code conversion, that help you\nconvert the schema and objects from your source database into a format that is\ncompatible with your destination database.\n\nHeterogeneous migrations use replication based on Change Data Capture (CDC) to\nprocess ongoing changes.\n\nFor more information, see supported scenarios.\n\nSupported scenarios\n-------------------\n\nDatabase Migration Service supports the following heterogeneous migrations:\n\n- [Migrate from Oracle to Cloud SQL for PostgreSQL](/database-migration/docs/oracle-to-postgresql/scenario-overview)\n- [Migrate from Oracle to AlloyDB for PostgreSQL](/database-migration/docs/oracle-to-alloydb/scenario-overview)\n- [Migrate from SQL Server to Cloud SQL for PostgreSQL](/database-migration/docs/sqlserver-to-csql-pgsql/scenario-overview)\n- [Migrate from SQL Server to AlloyDB for PostgreSQL](/database-migration/docs/sqlserver-to-alloydb/scenario-overview)"]]
