How can cloning the STAGING schema be achieved?

An Architect has been asked to clone schema STAGING as it looked one week ago, Tuesday June 1st at 8:00 AM, to recover some objects.

The STAGING schema has 50 days of retention.

The Architect runs the following statement:

CREATE SCHEMA STAGING_CLONE CLONE STAGING at (timestamp => ‘2021-06-01 08:00:00’);

The Architect receives the following error: Time travel data is not available for schema STAGING. The requested time is either beyond the allowed time travel period or before the object creation time. The Architect then checks the schema history and sees the following: CREATED_ON|NAME|DROPPED_ON 2021-06-02 23:00:00 | STAGING | NULL

2021-05-01 10:00:00 | STAGING | 2021-06-02 23:00:00

How can cloning the STAGING schema be achieved?
A . Undrop the STAGING schema and then rerun the CLONE statement.
B . Modify the statement: CREATE SCHEMA STAGING_CLONE CLONE STAGING at (timestamp => ‘2021-05-01 10:00:00’);
C . Rename the STAGING schema and perform an UNDROP to retrieve the previous STAGING schema version, then run the CLONE statement.
D . Cloning cannot be accomplished because the STAGING schema version was not active during the proposed Time Travel time period.

View Answer

Answer: D

Explanation:

The error encountered during the cloning attempt arises because the schema STAGING as it existed on June 1st, 2021, is not within the Time Travel retention period. According to the schema history, STAGING was recreated on June 2nd, 2021, after being dropped on the same day. The requested timestamp of ‘2021-06-01 08:00:00’ is prior to this recreation, hence not available. The STAGING schema from before June 2nd was dropped and exceeded the Time Travel period for retrieval by the time of the cloning attempt. Therefore, cloning STAGING as it looked on June 1st, 2021, cannot be achieved because the data from that time is no longer available within the allowed Time Travel window.

Reference: Snowflake documentation on Time Travel and data cloning, which is covered under the SnowPro Advanced: Architect certification resources.