In questa pagina confermi che il job di migrazione ha eseguito correttamente la migrazione dei dati dall'istanza del database di origine all'istanza del database AlloyDB di destinazione.
Verifica almeno che l'istanza del database e le relative tabelle esistano nell'istanza AlloyDB. Puoi anche verificare il numero di righe o i contenuti esatti delle tabelle.
Esegui i comandi SQL per verificare la migrazione. Ad esempio:
Al prompt postgres, inserisci \list per elencare i database e verificare di vedere l'istanza del database di origine.
Al prompt postgres, inserisci \connect SOURCE_DB_NAME e, quando richiesto, inserisci la password per connetterti all'istanza del database e visualizzare le tabelle associate all'istanza. Il nome della richiesta cambia da postgres a SOURCE_DB_NAME.
Al prompt SOURCE_DB_NAME, inserisci \dt per visualizzare le tabelle di questa istanza.
Al prompt SOURCE_DB_NAME, inserisci GRANT alloydbexternalsync to USER; perché vuoi concedere a questo utente l'autorizzazione ad accedere ai dati nelle tabelle di questa istanza. Inoltre, sostituisci USER con il nome dell'utente che hai utilizzato per connetterti all'istanza del database di destinazione.
Al prompt SOURCE_DB_NAME, inserisci SELECT * from TABLE_NAME; per visualizzare le informazioni replicate da una tabella nell'istanza del database di origine.
Verifica di visualizzare le informazioni corrette nella tabella.
Se tutto ciò che controlli è come previsto, significa che Database Migration Service ha eseguito correttamente la migrazione dei dati.
[[["Facile da capire","easyToUnderstand","thumb-up"],["Il problema è stato risolto","solvedMyProblem","thumb-up"],["Altra","otherUp","thumb-up"]],[["Difficile da capire","hardToUnderstand","thumb-down"],["Informazioni o codice di esempio errati","incorrectInformationOrSampleCode","thumb-down"],["Mancano le informazioni o gli esempi di cui ho bisogno","missingTheInformationSamplesINeed","thumb-down"],["Problema di traduzione","translationIssue","thumb-down"],["Altra","otherDown","thumb-down"]],["Ultimo aggiornamento 2025-09-05 UTC."],[[["\u003cp\u003eThis guide provides steps to verify that data has been correctly migrated from a source database instance to an AlloyDB database instance.\u003c/p\u003e\n"],["\u003cp\u003eThe minimum verification involves checking for the existence of the database instance and its tables within the AlloyDB instance.\u003c/p\u003e\n"],["\u003cp\u003eUsers can verify the migration by accessing the read replica of their migration job via the Google Cloud console and executing SQL commands in Cloud Shell.\u003c/p\u003e\n"],["\u003cp\u003eThe verification process includes listing databases, connecting to the source database, viewing its tables, granting access, and selecting data from a replicated table.\u003c/p\u003e\n"],["\u003cp\u003eSuccessful verification, evidenced by expected results, confirms that the Database Migration Service has accurately transferred the data.\u003c/p\u003e\n"]]],[],null,["# Verify a migration\n\n\u003cbr /\u003e\n\n[MySQL](/database-migration/docs/mysql/verify-migration \"View this page for the MySQL version of Database Migration Service.\") \\| [PostgreSQL](/database-migration/docs/postgres/verify-migration \"View this page for the PostgreSQL version of Database Migration Service.\") \\| PostgreSQL to AlloyDB\n\n\u003cbr /\u003e\n\n\u003cbr /\u003e\n\n\u003cbr /\u003e\n\nVerifying a migration\n---------------------\n\nIn this page, you confirm that the migration job migrated data from your source database instance to the destination AlloyDB database instance correctly.\n\n\u003cbr /\u003e\n\nAt a minimum, verify that the database instance and its tables exist in the\nAlloyDB instance. You can also verify the tables' row counts or exact\ncontents.\n\n\nThe following steps show a minimal example:\n\n1. Go to the [AlloyDB clusters page](https://console.cloud.google.com/alloydb) in the Google Cloud console.\n2. Click the read replica entry of your migration job.\n3. Click the **Activate Cloud Shell** icon that appears in the upper-right region of the page.\n4. At the Cloud Shell prompt, press **Enter**.\n5. Optional: If an **Authorize Cloud Shell** dialog box appears, then click **Authorize**.\n6. At the **Enter password** prompt, enter the password that you either provided or that Database Migration Service generated for you in [Define and create the destination AlloyDB instance](/database-migration/docs/postgresql-to-alloydb/create-migration-job#dest).\n7. Run SQL commands to verify the migration. For example:\n 1. At the **postgres** prompt, enter `\\list` to list the databases and verify that you see your source database instance.\n 2. At the **postgres** prompt, enter `\\connect `\u003cvar translate=\"no\"\u003eSOURCE_DB_NAME\u003c/var\u003e, and enter the password when prompted, to connect to the database instance and see the tables associated with the instance. The name of the prompt changes from `postgres` to \u003cvar translate=\"no\"\u003eSOURCE_DB_NAME\u003c/var\u003e.\n 3. At the \u003cvar translate=\"no\"\u003eSOURCE_DB_NAME\u003c/var\u003e prompt, enter `\\dt` to see the tables of this instance.\n 4. At the \u003cvar translate=\"no\"\u003eSOURCE_DB_NAME\u003c/var\u003e prompt, enter `GRANT alloydbexternalsync to `\u003cvar translate=\"no\"\u003eUSER\u003c/var\u003e`;` because you want to give this user permission to access the data in the tables of this instance. Also, replace \u003cvar translate=\"no\"\u003eUSER\u003c/var\u003e with the name of the user you used to connect to the destination database instance.\n 5. At the \u003cvar translate=\"no\"\u003eSOURCE_DB_NAME\u003c/var\u003e prompt, enter `SELECT * from `\u003cvar translate=\"no\"\u003eTABLE_NAME\u003c/var\u003e`;` to see the information that's replicated from a table in your source database instance.\n 6. Verify that you see the correct information in the table.\n\n\u003cbr /\u003e\n\n\u003cbr /\u003e\n\nIf everything you check is as you expect, then Database Migration Service has migrated the data correctly."]]
