su - oracle
sqlplus /nolog
conn / as sysdba
select * from v$flash_recovery_area_usage;
select sum(percent_space_used)*3/100 from v$flash_recovery_area_usage;
alter system set db_recovery_file_dest_size=8g;
清理archivelog
show parameter recover;
删除归档日志
rman操作
rman
connect target sys/Dminjection!
crosscheck backup;
delete obsolete;
delete expired backup;
crosscheck archivelog all;
delete expired archivelog all;
host;
sqlplus /nolog
connect / as sysdba
select * from v$flash_recovery_area_usage;