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3429665 - HANA ASYNC replication in-memory buffer problems (Alert ID 106)

Symptom

You get errors like:

  • HANA Alert ID 106 with Alert name 'ASYNC replication in-memory buffer overflow' frequently:
  • On host <host:port> local in-memory buffer in ASYNC replication mode ran full ### time(s)
  • Parameter 'logshipping_async_buffer_size' doesn't take effect in secondary site of a 3-teris landscape
  • Mini check ID: M1818 - Async log shipping buffer full (last day) from 1999993 - How-To: Interpreting SAP HANA Mini Check Results

 

Trace of the affected service can show the following:

  • w sr_dataaccess    DisasterRecoveryConfiguration.cpp(00870) : Configured async replication buffer size too small: 16777216 -> setting to min size 16777216
  • i PersistenceManag DisasterRecoveryProtocol.cpp(05762) : Asynchronous replication buffer full, accumulated count = 12031, trace cooldown = 300 s
  • exception 3000321: Asynchronous Replication Buffer is Overloaded


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Environment

  • SAP Hana Platform Edition 1.0
  • SAP Hana Platform Edition 2.0

Product

SAP HANA 1.0, platform edition ; SAP HANA, platform edition 2.0

Keywords

logshipping_async_buffer_size, logshipping_async_wait_on_buffer_full, reconnect_time_interval, Asynchronous log shipping buffer full, network throughput, network latency, M1818, secondary, HANA replication, offline, online parameter , KBA , HAN-DB-HA , SAP HANA High Availability (System Replication, DR, etc.) , Problem

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