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+### 1.set db_recovery_file_dest_size big
+```sql
+shutdown abort
+startup mount
+show parameter db_recovery_file_dest_siz
+alter system set  db_recovery_file_dest_siz=5G scope=both;
+```
+### 2.delete archivelog
+```sql
+startup mount
+```
+```shell
+rman target /
+```
+```sql
+crosscheck archivelog all;
+# 无删除提示
+delete noprompt archivelog until time  'sysdate-1';
+# 无提示强制删除昨天之前的日志
+delete noprompt  force archivelog until time 'sysdate -1';
+```
+```sql
+alter database open;
+```
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