RMAN-03002 ORA-01861: literal does not match format string

RMAN> run

{

  ALLOCATE CHANNEL ch00 TYPE 'SBT_TAPE';

  SEND 'NB_ORA_SERV=nbusrv, NB_ORA_CLIENT=Pbddb';

  set until time='2019-03-14 23:30:00';

  restore database;

  RELEASE CHANNEL ch00;

}2> 3> 4> 5> 6> 7> 8>

using target database control file instead of recovery catalog

allocated channel: ch00

channel ch00: SID=3381 device type=SBT_TAPE

channel ch00: Veritas NetBackup for Oracle - Release 7.7.3 (2016051915)

sent command to channel: ch00

executing command: SET until clause

Starting restore at 20-MAR-2019

released channel: ch00

RMAN-00571: ===========================================================

RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============

RMAN-00571: ===========================================================

RMAN-03002: failure of restore command at 03/20/2019 17:41:35

ORA-01861: literal does not match format string

RMAN>

[oracle@Pywdgdb6 scripts]$ rman   target /

Recovery Manager: Release 12.2.0.1.0 - Production on Wed Mar 20 17:46:34 2019

Copright (c) 1982, 2017, Oracle and/or its affiliates.  All rights reserved.

connected to target database: CCICBD (DBID=388642656, not open)

RMAN> run

{

  ALLOCATE CHANNEL ch00 TYPE 'SBT_TAPE';

  SEND 'NB_ORA_SERV=nbusrv, NB_ORA_CLIENT=Pbddb';

  sql 'alter session set nls_date_format="yyyy-mm-dd hh24:mi:ss"';

  set until time='2019-03-14 23:30:00';

  restore database;

  RELEASE CHANNEL ch00;

}2> 3> 4> 5> 6> 7> 8> 9>

using target database control file instead of recovery catalog

allocated channel: ch00

channel ch00: SID=3381 device type=SBT_TAPE

channel ch00: Veritas NetBackup for Oracle - Release 7.7.3 (2016051915)

sent command to channel: ch00

sql statement: alter session set nls_date_format="yyyy-mm-dd hh24:mi:ss"

executing command: SET until clause

Starting restore at 20-MAR-2019

channel ch00: starting datafile backup set restore

channel ch00: specifying datafile(s) to restore from backup set

channel ch00: restoring datafile 00008 to +DATAGRP1/63E7D91E600BEB37E0535C58010AA6F2/DATAFILE/system.272.966706021

channel ch00: restoring datafile 00012 to +DATAGRP1/63E7D91E600BEB37E0535C58010AA6F2/DATAFILE/bdbusitbs.276.966962771

channel ch00: restoring datafile 00015 to +DATAGRP1/63E7D91E600BEB37E0535C58010AA6F2/DATAFILE/undotbs1.279.967975987

channel ch00: restoring datafile 00017 to +DATAGRP1/63E7D91E600BEB37E0535C58010AA6F2/DATAFILE/nnc_data01.dbf

channel ch00: reading from backup piece bk_55597_1_1002078076