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Database Migration Service uses Cloud Logging. You can access two log categories to
acquire detailed information on events that occur with relation to your migration
jobs: Database Migration Service logs, and the destination Cloud SQL for PostgreSQL logs.
Each log entry contains a jsonPayload.textMessage field with a description to
help you better understand the event. There are different types of messages,
for example:
Sample log messages for the
datamigration.googleapis.com/MigrationJob resource
Log text message
Description
FULL DUMP read is completed for table: {SCHEMA_TABLE_NAME}
This message means that Database Migration Service finished reading
specific table data in your source database for the full dump phase.
This message indicates that the full dump phase for the table is
in an advanced stage and is likely to complete shortly.
Successfully loaded {NUMBER} FULL DUMP rows into table: {SCHEMA_TABLE_NAME}
This message means that Database Migration Service finished writing a batch of
rows into a specific table in your destination instance during the full dump
phase.
Successfully applied {NUMBER} CDC rows into table: {SCHEMA_TABLE_NAME}
This message means that Database Migration Service finished writing a batch of
rows into a specific table in your destination instance during the CDC phase.
Accessing data of table: {SCHEMA_TABLE_NAME} for data processing purpose
When you
use a CMEK
for your migration job, this message indicates that
Database Migration Service accessed the encryption key to process data
for a specific table.
Cloud SQL for PostgreSQL instance logs
Cloud SQL for PostgreSQL also provides log entries for your destination instance.
See the
Cloud SQL logs reference in the Cloud Logging documentation.
View and query logs
To view your logs, perform the following:
In the Google Cloud console, go to the
Migration jobs page.
In the Jobs tab, click the display name of the migration job
for which you want to view logs.
The migration job details page opens.
On the migration job details page, click View logs and perform one
of the following:
To view migration job logs, select Migration job logs.
To view logs for your Cloud SQL for PostgreSQL destination instance,
select Destination instance logs.
The Logs Explorer page opens.
On the Logs Explorer page, you can use the drop-down menus
to modify the query and filter log entries. For example, to filter migration
job logs for events where Database Migration Service accessed a specific table in your
source database, you can use a query similar to the following:
resource.type="datamigration.googleapis.com/MigrationJob"
resource.labels.migration_job_id="MIGRATION_JOB_ID"
jsonPayload.textMessage:"Accessing data of table"
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Hard to understand","hardToUnderstand","thumb-down"],["Incorrect information or sample code","incorrectInformationOrSampleCode","thumb-down"],["Missing the information/samples I need","missingTheInformationSamplesINeed","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-25 UTC."],[[["\u003cp\u003eDatabase Migration Service uses Cloud Logging to provide detailed information on migration job events, accessible through two log categories: Database Migration Service logs and destination Cloud SQL for PostgreSQL logs.\u003c/p\u003e\n"],["\u003cp\u003eDatabase Migration Service logs offer structured logs for MigrationJob, ConnectionProfile, and PrivateConnection resources, representing real-world events with descriptions in the \u003ccode\u003ejsonPayload.textMessage\u003c/code\u003e field.\u003c/p\u003e\n"],["\u003cp\u003eThe Cloud SQL for PostgreSQL logs provide information related to the destination instance and are viewable via the Cloud SQL logs reference.\u003c/p\u003e\n"],["\u003cp\u003eLogs can be accessed and viewed by navigating to the Migration jobs page in the Google Cloud console, selecting a specific migration job, and then clicking "View logs" to choose either "Migration job logs" or "Destination instance logs".\u003c/p\u003e\n"],["\u003cp\u003eThe Logs Explorer allows users to filter logs by message content, enabling focused analysis, such as filtering for events where Database Migration Service accesses a specific table.\u003c/p\u003e\n"]]],[],null,["# Logging\n\nDatabase Migration Service uses Cloud Logging. You can access two log categories to\nacquire detailed information on events that occur with relation to your migration\njobs: Database Migration Service logs, and the destination Cloud SQL for PostgreSQL logs.\n\nDatabase Migration Service logs\n-------------------------------\n\nDatabase Migration Service for Oracle to Cloud SQL for PostgreSQL provides\n[structured logs](/logging/docs/structured-logging#structured_logging_special_fields) for the\n[`datamigration.googleapis.com/MigrationJob`](/database-migration/docs/reference/rest/v1/projects.locations.migrationJobs#resource:-migrationjob),\n[`datamigration.googleapis.com/ConnectionProfile`](/database-migration/docs/reference/rest/v1/projects.locations.connectionProfiles),\nand\n[`datamigration.googleapis.com/PrivateConnection`](/database-migration/docs/reference/rest/v1/projects.locations.privateConnections)\nresources.\nThese logs represent real-world events, such as when a migration job is created,\nwhen Database Migration Service reads information from your source database,\nor when a connection profile is edited.\n\nEach log entry contains a `jsonPayload.textMessage` field with a description to\nhelp you better understand the event. There are different types of messages,\nfor example:\n\nCloud SQL for PostgreSQL instance logs\n--------------------------------------\n\nCloud SQL for PostgreSQL also provides log entries for your destination instance.\nSee the\n[Cloud SQL logs reference](/logging/docs/api/platform-logs#cloud_sql) in the Cloud Logging documentation.\n\nView and query logs\n-------------------\n\nTo view your logs, perform the following:\n\n1. In the Google Cloud console, go to the **Migration jobs** page.\n\n [Go to Migration jobs](https://console.cloud.google.com/dbmigration/migrations)\n2. In the **Jobs** tab, click the display name of the migration job for which you want to view logs.\n\n The migration job details page opens.\n3. On the migration job details page, click **View logs** and perform one of the following:\n - To view migration job logs, select **Migration job logs**.\n - To view logs for your Cloud SQL for PostgreSQL destination instance, select **Destination instance logs**.\n\n The **Logs Explorer** page opens.\n4. On the **Logs Explorer** page, you can use the drop-down menus to modify the query and filter log entries. For example, to filter migration job logs for events where Database Migration Service accessed a specific table in your source database, you can use a query similar to the following: \n\n ```bash\n resource.type=\"datamigration.googleapis.com/MigrationJob\"\n resource.labels.migration_job_id=\"\u003cvar translate=\"no\"\u003eMIGRATION_JOB_ID\u003c/var\u003e\"\n jsonPayload.textMessage:\"Accessing data of table\"\n ```\n\nWhat's next\n-----------\n\n- For more information on using Logs Explorer, see\n [View logs by using Logs Explorer](/logging/docs/view/logs-explorer-interface).\n\n- For a detailed reference of what fields are supported in Database Migration Service\n log entries, see\n [Database Migration Service logs reference](/logging/docs/api/platform-logs#cloud_database_migration_service).\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)."]]
