Pg_restore: error: did not find magic string in file header

Pg_restore error: did not find magic string in file header. If you encounter this issue when trying to restore a PostgreSQL database backup using pg_restore, it typically indicates a problem with the backup file. Check if the file is corrupted or if it was generated incorrectly. Ensure that the file used for restoration is valid and try the process again to resolve this error.

The Pg_restore: error: did not find magic string in file header error can occur due to several reasons:

• Corrupted Backup File: The backup file being used for restoration may be corrupted or incomplete, leading to the magic string not being found in the file header.
• Incorrect File Format: If the backup file was created using a different format or version incompatible with the pg_restore utility, the error may occur.
• File Transfer Issues: Problems during file transfer, such as interruptions or errors, can result in missing or altered data within the backup file.
• Version Mismatch: Incompatibility between the version of pg_restore being used and the version of the backup file can cause issues in locating the magic string.
• Permissions: Insufficient permissions to access or read the backup file may prevent the utility from identifying the magic string in the file header.

Ensuring the integrity of the backup file, using correct formats and versions, resolving file transfer problems, verifying permissions, and addressing version discrepancies can help in troubleshooting and resolving the Pg_restore: error: did not find magic string in file header error.

To resolve the Pg_restore: error: did not find magic string in file header issue, follow these steps:

1. Ensure that the backup file you are trying to restore was created properly without any corruption.
2. Confirm that the file being used for restoration is in the correct format and has not been tampered with.
3. If the error persists, consider recreating the backup file to ensure its integrity.
4. Check the pg_restore command syntax for any mistakes or missing parameters.
5. If the issue continues, try using a different backup file to check if the problem lies within the specific file.
6. Verify the PostgreSQL version compatibility between the backup file and the database being restored.
7. If none of the above steps resolve the error, seek assistance from the PostgreSQL community or support for further troubleshooting.

Pg_restore error: Did not find magic string in file header.