Schema:

ACCOUNT_USAGE

ICEBERG_STORAGE_OPTIMIZATION_HISTORY view¶

Use this Account Usage view to query Iceberg storage optimization jobs, which includes data compaction, within the last 365 days (1 year) for Apache Icebergâ„¢ tables in your account. You can query jobs for the following Iceberg tables:

  • Snowflake-managed tables

  • Open Catalog-managed tables

Note

  • Snowflake starts billing for data compaction of data files for Snowflake-managed Iceberg tables on October 20th, 2025.

  • To enable or disable data compaction on Snowflake-managed Iceberg tables, see Set data compaction.

Columns¶

Column name

Data type

Description

START_TIME

TIMESTAMP_LTZ

Start of the time range (on the hour mark) during which the operations were performed.

END_TIME

TIMESTAMP_LTZ

End of the time range (on the hour mark) during which the operations were performed.

CREDITS_USED

NUMBER

Number of credits billed for data compaction during the START_TIME and END_TIME window.

NUM_BYTES_SCANNED

NUMBER

Number of bytes scanned during the START_TIME and END_TIME window.

NUM_ROWS_WRITTEN

NUMBER

Number of rows compacted during the START_TIME and END_TIME window.

TABLE_ID

NUMBER

Internal, system-generated identifier for the Iceberg table in Snowflake.

TABLE_NAME

VARCHAR

Name of the Iceberg table defined in Snowflake.

ICEBERG_TABLE_UUID

VARCHAR

Apache Icebergâ„¢ table identifier, generated by the external Iceberg engine or catalog.

SCHEMA_ID

VARCHAR

System-generated identifier for the Snowflake schema that the table is in.

SCHEMA_NAME

VARCHAR

Name of the schema the table is in.

DATABASE_ID

NUMBER

System-generated identifier for the Snowflake database that the schema and table belong to.

DATABASE_NAME

VARCHAR

Name of the database that the schema and table belong to.

INSTANCE_ID

NUMBER

Internal, system-generated identifier for the instance that the object belongs to.

Usage notes¶

  • Latency for the view is up to 2 hours.

  • The view contains historical usage data for the last 365 days.

  • The USAGE_VIEWER role is granted the SELECT privilege on this view. For more information, see SNOWFLAKE database roles.

  • This view doesn’t include data compaction information for externally managed Iceberg table that aren’t managed by Open Catalog.

Examples¶

The following example shows how to filter for tables whose number of credits billed is more than a specified amount:

  SELECT
      table_name,
      start_time,
      credits_used
    FROM SNOWFLAKE.ACCOUNT_USAGE.ICEBERG_STORAGE_OPTIMIZATION_HISTORY
    WHERE credits_used > 0.0005
    ORDER BY
      credits_used DESC;

The query returns the following results:
Copy
+------------------+-------------------------------+--------------+
| TABLE_NAME       | START_TIME                    | CREDITS_USED |
+------------------+-------------------------------+--------------+
| my_iceberg_table | 2025-09-15 09:00:00.000 -0700 | 0.000529445  |
| my_iceberg_table | 2025-09-15 08:00:00.000 -0700 | 0.000516791  |
+------------------+-------------------------------+--------------+
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