При попытке сделать дамп выходит следующее.

[root@MES-DAT2 bin]# export ORACLE_HOME=/oracle/app/oracle/oracle/product/12.2.0/db_1
[root@MES-DAT2 bin]# export ORACLE_SID=orcl
[root@MES-DAT2 bin]# ./expdp MESRUSSIA_USER/MESRUSSIA_USER FULL=Y directory=ExportImport dumpfile=df.dmp logfile=ef.log

Export: Release 12.2.0.1.0 — Production on Tue Feb 13 13:42:47 2024

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

UDE-01034: operation generated ORACLE error 1034
ORA-01034: ORACLE not available
ORA-27101: shared memory realm does not exist
Linux-x86_64 Error: 2: No such file or directory
Additional information: 3701
Additional information: 651988147
UDE-00003: all allowable logon attempts failed

Подскажите, что делать?