NetWorker: Se inicia el respaldo de la base de datos Sybase, pero falla durante la fase de finalización

Se inicia el respaldo de la base de datos de Sybase, pero falla durante la fase de finalización.
Error:

D00: ERROR DE SYBMULTBUF: La comunicación entre procesos del emulador falló con el estado de error = 9, el código de error =0, el mensaje del sistema= la I/O de canalización devolvió 0 bytes.
Error de servidor abierto: 16248.10.0: Error en srv_select(): el descriptor de archivos 12 ya no está activo.
 

Backup Server: 4.194.2.1: Internal error. The srv_select() function was called to complete an I/O for 2240 bytes. After retrying 2241 times only 0 bytes have been read.
Backup Server: 4.141.2.75: [0] The 'read' call failed for database/archive device while working on stripe device 'nsrsyb::..4.1./nsr/apps/tmp/sybtmp_1014766.txt::000' with error number 0 (Success). Refer to your operating system documentation for further details.
Backup Server Internal Error: 4.62.3.1: Multibuffering subprocesses died, archive nsrsyb..4.1./nsr/apps/tmp/sybtmp_1014766.txt::000.
Backup Server: 4.141.2.66: [0] The 'write' call failed for database/archive device while working on stripe device 'nsrsyb::..4.1./nsr/apps/tmp/sybtmp_1014766.txt::000' with error number 32 (Broken pipe). Refer to your operating system documentation for further details.
Backup Server Internal Error: 4.62.3.8: Multibuffering subprocesses died, archive nsrsyb:..4.1./nsr/apps/tmp/sybtmp_1014766.txt::000.

sybmultbuf se bloquea
Pila de sybmultbuf:

Backup Server: 4.188.1.1: Database : 267710850 kilobytes (89%) DUMPED.
Backup Server: 3.43.1.1: Dump phase number 1 completed.
Backup Server: 3.43.1.1: Dump phase number 2 completed.
Backup Server: 3.43.1.1: Dump phase number 3 completed.
Backup Server: 4.188.1.1: Database : 268552362 kilobytes (100%) DUMPED.
A00: SYBMULTBUF: bs_trap; process received signal 11
A00: 0x7f6a508bcad0 : (killpg+0x40) [0x7f6a508bcad0]
A00: 0x7f6a50c3da74 : (__pthread_mutex_lock+0x4) [0x7f6a50c3da74]
A00: 0x7f6a5038d352 : (lg_atomic_decrement+0x22) [0x7f6a5038d352]
A00: 0x7f6a50289dc0 : (nw_ddcl_disconnect+0xa0) [0x7f6a50289dc0]
A00: 0x7f6a501e2302 : (xdup_ddinfo_ext+0x1a2) [0x7f6a501e2302]
A00: 0x7f6a501e257e : (dd_wrapper_fini+0x8e) [0x7f6a501e257e]
A00: 0x7f6a501e26b3 : (dd_cleanup+0x23) [0x7f6a501e26b3]
A00: 0x7f6a503a5210 : (lg_atexit_execute_and_remove_all+0x70) [0x7f6a503a5210]
A00: 0x7f6a50144a8e : (syb_close+0x12e) [0x7f6a50144a8e]
A00: 0x44da4f : (api_close+0x20f) [0x44da4f]
A00: 0x4293a2 : (ctl_job+0x39c) [0x4293a2]
A00: 0x425fe8 : (archive_proc+0x593) [0x425fe8]
A00: 0x42526a : (sybmbuf_main+0x66e) [0x42526a]
A00: 0x424bfa : (main+0x1b) [0x424bfa]
A00: 0x7f6a508a8ca3 : (__libc_start_main+0xf3) [0x7f6a508a8ca3]
A00: 0x424b09 : (_start+0x29) [0x424b09]

Este es un defecto de código que afecta a todos los procesos o clientes que se comunican directamente con libDDBoost/DDR.

El problema se resolvió en NetWorker 19.7.0.4 y NetWorker 19.8.0.1 y versiones posteriores.

Entorno: 
Red Hat 8.6
NetWorker/NMDA 19.7.0.1
NetWorker se implementa en un ambiente AWS.