3697222 - slowness observed in SAP HANA database due to asynchronous replication buffer full

• Slowness observed in the SAP HANA database system.
• Asynchronous replication buffer full, with accumulated counts increasing over time.
• Trace logs indicate repeated occurrences of "Asynchronous replication buffer full, accumulated count = [value], trace cooldown = 300 s".
• BarrierSemaphore Wait observed in threads.
• LoggerBufferSwitch wait situations identified in logs.

• Threads

  BarrierSemaphore Wait| |LoggerBufferSwitch  |no SQL (CommitTrans)           

• indexserver.trc

  
  Line 19914: [2805657]{-1}[1942/12558338716] 2025-10-26 09:27:09.680700 i PersistenceManag DisasterRecoveryProtocol.cpp(07669) : Asynchronous replication buffer full, accumulated count = 10293, trace cooldown = 300 s
  [679893]{-1}[2902/12636876161] 2025-10-27 09:28:12.571088 i PersistenceManag DisasterRecoveryProtocol.cpp(07669) : Asynchronous replication buffer full, accumulated count = 26856, trace cooldown = 300 s
  Line 20053: [2805656]{-1}[1830/12563802428] 2025-10-26 10:27:09.642988 i PersistenceManag DisasterRecoveryProtocol.cpp(07669) : Asynchronous replication buffer full, accumulated count = 11444, trace cooldown = 300 s
  Line 20511: [1045591]{-1}[1977/12582755121] 2025-10-26 14:27:11.933212 i PersistenceManag DisasterRecoveryProtocol.cpp(07669) : Asynchronous replication buffer full, accumulated count = 11525, trace cooldown = 300 s

                                                                                                                                                                                                                                               

SAP HANA PLATFORM EDITION 2.0

slowness, SAP HANA, asynchronous replication buffer full, BarrierSemaphore Wait, LoggerBufferSwitch, log buffer size, log buffer count, log segment size, redo log files, system replication, I/O write regressions, savepoint bottlenecks, backup bottlenecks, logshipping_async_buffer_size, log_preformat_segment_count , KBA , HAN-DB-ENG , SAP HANA DB Engines , Problem