RAC DG Broker ora-16843 ora-16839错误

新搭的一套ADG，在启用配置后，查询状态报以下错误：

DGMGRL> show configuration
Configuration - ADG_ZT

  Protection Mode: MaxAvailability
  Members:
  cdb01  - Primary database
    cdb02  - Physical standby database
    ztdb - Physical standby database
      Error: ORA-16843: errors discovered in diagnostic repository

DGMGRL> show database ztdb

Database - ztdb

  Role:               PHYSICAL STANDBY
  Intended State:     APPLY-ON
  Transport Lag:      0 seconds (computed 0 seconds ago)
  Apply Lag:          0 seconds (computed 0 seconds ago)
  Average Apply Rate: 29.00 KByte/s
  Real Time Query:    ON
  Instance(s):
    ztdb1

  Database Error(s):
    ORA-16839: one or more user data files are missing

Database Status:
ERROR

一度怀疑restore的时候部分文件丢失了，对比主备库两边的数据文件，并没有异常，备库查询恢复/还原错误，也是正常的。

RMAN> report schema;
RMAN> list failure;
Database Role: PHYSICAL STANDBY
no failures found that match specification

MOS上有一个bug，怀疑是这个bug引起的：
Bug 21495155 - data guard broker configuration shows ORA-16843 in RAC (Doc ID 21495155.8)

Workaround:
删除ADR下面的HM_FINDING.ams文件：

[[email protected] diag]$ find ./ -name "metadata"
./rdbms/ztdb01/ztdb011/metadata
[[email protected] diag]$ cd ./rdbms/ztdb01/ztdb011/metadata
[[email protected] metadata]$ mv HM_FINDING.ams HM_FINDING.ams.old
DGMGRL> show  configuration

Configuration - ADG_ZT

  Protection Mode: MaxAvailability
  Members:
  cdb01  - Primary database
    cdb02  - Physical standby database
    ztdb01 - Physical standby database

Fast-Start Failover: DISABLED

Configuration Status:
SUCCESS   (status updated 56 seconds ago)

[oracle@ztdb metadata]$ ls -ltr HM_FIND*
-rw-r----- 1 oracle oinstall 475136 9月   7 16:26 HM_FINDING.ams.old
-rw-r----- 1 oracle oinstall  65536 9月   7 17:15 HM_FINDING.ams

EOF