[ORACLE]ORA-03113: end-of-file on communication channel

SYS @ D4C>startup
ORA-32004: obsolete or deprecated parameter(s) specified for RDBMS instance
ORACLE instance started.

Total System Global Area 8589931656 bytes
Fixed Size            9143432 bytes
Variable Size         1040187392 bytes
Database Buffers     4294967296 bytes
Redo Buffers           24408064 bytes
In-Memory Area         3221225472 bytes
Database mounted.
ORA-03113: end-of-file on communication channel
Process ID: 8571
Session ID: 9 Serial number: 61332

[oracle@d4cdb 193]$  rman target /

Recovery Manager: Release 19.0.0.0.0 - Production on Fri May 15 11:39:07 2020
Version 19.3.0.0.0

Copyright (c) 1982, 2019, Oracle and/or its affiliates.  All rights reserved.

connected to target database: D4CDB (DBID=577592589, not open)

RMAN> crosscheck archivelog all;
RMAN> delete expired archivelog all;
SYS @ D4C>alter database open;

Database altered.