数据库没办法open，无法修改参数db_recovery_file_dest
SQL> alter database open
2 ;
alter database open
*
ERROR at line 1:
ORA-03113: end-of-file on communication channel
Process ID: 26064
Session ID: 639 Serial number: 3
rman没办法删除archive日志,释放不出空间。死循环。各位大佬~求解，谢谢
RMAN> crosscheck archivelog all;
using target database control file instead of recovery catalog
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03002: failure of crosscheck command at 08/28/2019 10:27:14
RMAN-12010: automatic channel allocation initialization failed
RMAN-06403: could not obtain a fully authorized session
ORA-01034: ORACLE not available
ORA-27101: shared memory realm does not exist
Linux-x86_64 Error: 2: No such file or directory
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