Dell Avamar for Oracle 19.10 User Guide

Year 2038

Avamar 19.2 and later server subsystems support backup retention until February 2106. However, for earlier releases, due to the signed 32-bit integer time format of UNIX and Linux operating systems, the Avamar server subsystems will support backup retention until January 2038 and therefore cannot restore backup after this date.

Newer Avamar releases offer support for longer retention periods:

• Backup retention after 2038 is successful when all Avamar subsystems use unsigned 32-bit integers.
• In Avamar 19.2 and later releases, the Avamar server, client, and plug-ins subsystems all use an unsigned 32-bit integer and will continue to start and retain data until 2106.
• In Avamar 19.1, only the Avamar server subsystem used an unsigned 32-bit integer, and will continue to start until 2106. However, the Avamar client and plug-ins subsystems used a signed 32-bit integer and will only retain data until 2038.
• In Avamar 19.1 and earlier releases, the Avamar server, client, and plug-ins subsystems all used a signed 32-bit integer, and will only continue to start and retain data until 2038.

Therefore, with an Avamar 19.2 and later server subsystem and Avamar 19.2 or later client and plug-ins subsystems, all backup retention succeeds after 2038.

Avamar 19.2 and later clients also support restoring backups where the retention time is after 2038, and where the local (server and client) time is after 2038. Earlier client releases do not support this.

For backups of Windows or Linux clients, do not assign a retention period for a date after February 7, 2106.