RMAN> RUN {
2>  ALLOCATE CHANNEL d0 TYPE DISK maxpiecesize 16G;
3>  crosscheck backup;
4>  delete expired backup;
5>  delete backup;
6>   backup full database
7>    format='/u3/backup/f_data_is_%T_%s_%p.bkp' tag='DATA_LEVEL_FULL'
8>     database
9>      current controlfile
10>       format='/u3/backup/f_cntrl_is_%T_%s.bkp' tag='COTRL_LEVEL_FULL'
11>         spfile
12>       format='/u3/backup/f_spfile_is_%T_%s_%p.bkp' tag='SPFILE_LEVEL_FULL'
13>      plus archivelog
14>     format='/u3/backup/f_alog_is_%T_%s_%p.bkp' tag='ALOG_LEVEL_FULL';
15> RELEASE CHANNEL d0;
16> }

input datafile fno=00002 name=/opt/oracle/oradata/is/undotbs01.dbf
input datafile fno=00001 name=/opt/oracle/oradata/is/system01.dbf
channel d0: starting piece 1 at 10-MAY-19
channel d0: finished piece 1 at 10-MAY-19
piece handle=/opt/oracle/product/10.2/db_1/dbs/ftu16env_1_1 tag=TAG20190510T101547 comment=NONE
channel d0: starting piece 2 at 10-MAY-19
released channel: d0
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03002: failure of backup plus archivelog command at 05/10/2019 10:23:51
ORA-19502: write error on file "/opt/oracle/product/10.2/db_1/dbs/ftu16env_2_1", blockno 231553 (blocksize=8192)
ORA-27072: File I/O error
Linux-x86_64 Error: 9: Bad file descriptor
Additional information: 4
Additional information: 231553
Additional information: 602112

13>      plus archivelog
14>     format='/u3/backup/f_alog_is_%T_%s_%p.bkp' tag='ALOG_LEVEL_FULL';