For massive transfer i may use below techniques depending upon the nature of data: 1. Encrypt data if applicaple during transit and end-to-end and use checksums and hashes to verify data integrity and Use secure protocols like SFTP/FTPS for transfers. 2. Compress data to reduce transfer time and risk and segment transfers into smaller batches with resume capabilities 3. Must take proper backup of data before starting the transfer. 4. Try increasing network bandwidth and use stablized network to avoid disruptions and data loss. 5. Perform test on transfered datasets beforehand to assure safe transfer.

To safeguard data during massive transfers, a DBA implements multiple strategies. Firstly, encryption is used both in transit and at rest to protect against unauthorized access. SSL/TLS protocols secure the data transmission channels, while data masking and anonymization ensure sensitive information remains hidden. Integrity checks, such as hashing, are performed before and after transfers to verify data accuracy. Role-based access controls (RBAC) are enforced to limit access permissions. Additionally, backups are taken before transfers to ensure data recovery in case of corruption. Using secure transfer tools like SCP or SFTP, and monitoring logs for anomalies, further enhances security.

- Use checksums or hashing algorithms (like SHA-256) to generate a unique value for the data before transfer. - Utilize secure transfer protocols such as SFTP, FTPS, or HTTPS to encrypt data during transit - Implement validation checks after data transfer, including record counts, data type checks, and range validations to ensure data consistency. - Employ tools designed for large data transfers that incorporate built-in integrity checks, like rsync or specialized data transfer applications. - Set up monitoring systems that can alert you to anomalies during the transfer process, such as unexpected delays or discrepancies in data size.