3004174 - DUMP database fails due error "srv_select() was called with a bad select mask (no fds set)" - SAP ASE

Dump database is failing due the following errors frequently after upgrading ASE 16.0 SP03 PL09:

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Nov 23 03:00:00 2020: Backup Server: 4.41.1.1: Creating new disk file /bkpdir/dumpxx.
Nov 23 03:00:00 2020: Open Server Error: 16110.10.0: srv_select() was called with a bad select mask (no fds set) parameter.
Nov 23 03:00:00 2020: Backup Server Internal Error: 4.62.3.5: Multibuffering subprocesses died, archive /bkpdir/dumpxx.
Nov 23 03:00:00 2020: Backup Server: 1.28.2.93: Open Server routine bgd_chanready failed.  See Backup Server error log for additional information.
Nov 23 03:00:00 2020: Backup Server Internal Error: 4.62.3.4: Multibuffering subprocesses died, archive /bkpdir/dumpxx.
Nov 23 03:00:00 2020: Backup Server: 4.128.2.1: Failed to start multibuffering subprocesses for archive device '/bkpdir/dumpxx'. Look at the Backup Server error log or standard error for more information.
Nov 23 03:00:00 2020: A00: E-Diag: C_QATRACE command received.
Nov 23 03:00:00 2020: A00: E-Diag: Received the trace flags bitmap. Tracing within sybmultbuf is enabled.
Nov 23 03:00:00 2020: A00: SYBMULTBUF ERROR: Failed to open database info file /tmp//SYBASE_back_138_9629_3703. Code=2, Message=No such file or directory

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It is necessary to restart BKPS.

SAP ASE 16.0 SP03 PL09

16110.10.0 16110 srv_select() bad select mask no fds set parameter Open Server routine bgd_chanready failed CR 823745 CR823745 , KBA , BC-SYB-ASE , Sybase ASE Database Platform (non Business Suite) , Problem