db2备份失败，数据库会断连？

备份日志报错信息
Retrieving INCREMENTAL DATABASE BACKUP information.
  No INCREMENTAL DATABASE BACKUP images found for ADSM1

Retrieving DELTA DATABASE BACKUP information.
  No DELTA DATABASE BACKUP images found for ADSM1
SQL1015N  The database is in an inconsistent state.  SQLSTATE=55025

diag.log错误信息
2020-05-31-13.10.06.789594+480 E1522756848A615      LEVEL: Error
PID     : 8388730              TID : 43303          PROC : db2sysc 0
INSTANCE: istdev1              NODE : 000           DB   : ADSM1
APPHDL  : 0-4103               APPID: *LOCAL.istdev1.200531051006
AUTHID  : ISTDEV1              HOSTNAME: haapdbd01
EDUID   : 43303                EDUNAME: db2agent (ADSM1) 0
FUNCTION: DB2 UDB, base sys utilities, sqledint, probe:2535
MESSAGE : SQL1015N  The database is in an inconsistent state.
DATA #1 : String, 91 bytes
Crash Recovery is needed.
Issue RESTART DATABASE on this node before issuing this command.

2020-05-31-13.10.08.585007+480 E1522763119A617      LEVEL: Error
PID     : 8388730              TID : 43303          PROC : db2sysc 0
INSTANCE: istdev1              NODE : 000           DB   : ADPMS1
APPHDL  : 0-4104               APPID: *LOCAL.istdev1.200531051008
AUTHID  : ISTDEV1              HOSTNAME: haapdbd01
EDUID   : 43303                EDUNAME: db2agent (ADPMS1) 0
FUNCTION: DB2 UDB, base sys utilities, sqledint, probe:2535
MESSAGE : SQL1015N  The database is in an inconsistent state.
DATA #1 : String, 91 bytes
Crash Recovery is needed.
Issue RESTART DATABASE on this node before issuing this command.

2020-05-31-13.10.11.116773+480 I1522774042A476      LEVEL: Error
PID     : 8388730              TID : 31546          PROC : db2sysc 0
INSTANCE: istdev1              NODE : 000           DB   : ADRPT1  
HOSTNAME: haapdbd01
EDUID   : 31546                EDUNAME: db2logmgr (ADRPT1) 0
FUNCTION: DB2 UDB, data protection services, sqlpgArchiveLogVendor, probe:1630
MESSAGE : ZRC=0x860F000A=-2045837302=SQLO_FNEX "File not found."
          DIA8411C A file "" could not be found.
每周日跑脚本自动备份
有的数据库能备份完成，有的会报如上错误
备份失败的数据库单独执行备份语句也能完成备份，不会报错

不知道错误出现在哪里，麻烦各位大佬点拨一下