diff --git a/django/db/backends/sqlite3/creation.py b/django/db/backends/sqlite3/creation.py
index d57bf9ee1f..7105b73257 100644
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a
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b
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class DatabaseCreation(BaseDatabaseCreation):
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| 142 | 142 | connection_str = ( |
| 143 | 143 | f"file:memorydb_{alias}_{_worker_id}?mode=memory&cache=shared" |
| 144 | 144 | ) |
| | 145 | source_db_name = settings_dict["NAME"] |
| 145 | 146 | source_db = self.connection.Database.connect( |
| 146 | | f"file:{alias}_{_worker_id}.sqlite3?mode=ro", uri=True |
| | 147 | f"file:{source_db_name}?mode=ro", uri=True |
| 147 | 148 | ) |
| 148 | 149 | target_db = sqlite3.connect(connection_str, uri=True) |
| 149 | 150 | source_db.backup(target_db) |