SAP HANA 2.0 Administration · System Replication (HA/DR)

SYNC and SYNC with full sync (enable_full_sync) both persist the log to disk on both SAP HANA nodes before commit. What is the one behavioral difference — and why is full sync dangerous for OLTP?

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More in System Replication (HA/DR)

A colleague wants to connect SAP HANA Cockpit directly to the standby secondary in a system replication pair to confirm it is healthy. Why does this fail by default, and what does that imply for verification?

To offload backup I/O from the production SAP HANA primary, an admin schedules data and log backups on the system-replication secondary. Why is this wrong, and when does it become possible?

You are picking the replication mode for the long-haul DR link between SAP HANA in two geographically distant data centers. Why is ASYNC the right choice here but the wrong choice for a nearby pair?

An admin sets timetravel_snapshot_creation_interval and assumes SAP HANA secondary time travel is now protecting them. Why might no recovery point actually exist?

Since a closed SAP HANA secondary accepts no sessions, how do you actually read its monitoring views (e.g. its data volumes) — and from where?

A user accidentally deletes a table on the SAP HANA primary. Why won't the system-replication secondary save you, and what feature would?

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