I got this issue while using ADRCI tool to maintain the logs. This is how I fixed it:
[oracle@dbserver ~]$ adrci ADRCI: Release 11.2.0.3.0 - Production on Wed May 31 09:43:29 2017 Copyright (c) 1982, 2011, Oracle and/or its affiliates. All rights reserved. ADR base = "/u01/app/oracle" adrci> show homes ADR Homes: diag/diagtool/user_oracle/host_3933716914_11 diag/clients/user_oracle/host_3933716914_11 diag/rdbms/dbinst/DBINST diag/tnslsnr/dbserver/listener adrci> set home diag/diagtool/user_oracle/host_3933716914_11 adrci> purge DIA-48322: Relation [INCIDENT] of ADR V[2] incompatible with V[2] tool DIA-48210: Relation Not Found DIA-48166: error with opening ADR block file because file does not exist [/u01/app/oracle/diag/diagtool/user_oracle/host_3933716914_11/metadata/INCIDENT.ams] [0] adrci> migrate schema Schema migrated. adrci> purge adrci> quit
