Insufficient archive log space caused ORA-03113

Oracle 11g database was shut down for hardware maintenance. Unfortunately, the database can not be started after maintenance because of error ORA-03113.

$ srvctl sqlplus / as sysdba

SQL*Plus: Release 11.2.0.3.0 Production on Mon Apr 27 14:10:05 2015

Copyright (c) 1982, 2011, Oracle. All rights reserved.

Connected to an idle instance.

SQL> startup
ORACLE instance started.

Total System Global Area 835104768 bytes
Fixed Size 2226096 bytes
Variable Size 532678736 bytes
Database Buffers 276824064 bytes
Redo Buffers 23375872 bytes
Database mounted.
ORA-03113: end-of-file on communication channel
Process ID: 33947688
Session ID: 749 Serial number: 3

Apparently, something happended while instance status is changed to OPEN from MOUNT. Check alert log file:

ARC3 started with pid=30, OS id=51183782
ARC2: Becoming the 'no FAL' ARCH
ARC2: Becoming the 'no SRL' ARCH
ARC1: Becoming the heartbeat ARCH
Errors in file /u01/app/oracle/diag/rdbms/db01/DB01/trace/DB01_ora_45220056.trc:
ORA-19815: WARNING: db_recovery_file_dest_size of 10737418240 bytes is 100.00% used, and has 0 remaining bytes available.
************************************************************************
You have following choices to free up space from recovery area:
1. Consider changing RMAN RETENTION POLICY. If you are using Data Guard,
then consider changing RMAN ARCHIVELOG DELETION POLICY.
2. Back up files to tertiary device such as tape using RMAN
BACKUP RECOVERY AREA command.
3. Add disk space and increase db_recovery_file_dest_size parameter to
reflect the new space.
4. Delete unnecessary files using RMAN DELETE command. If an operating
system command was used to delete files, then use RMAN CROSSCHECK and
DELETE EXPIRED commands.
************************************************************************
ARCH: Error 19809 Creating archive log file to '+FRA2'
Errors in file /u01/app/oracle/diag/rdbms/db01/DB01/trace/DB01_ora_45220056.trc:
ORA-16038: log 3 sequence# 32464 cannot be archived
ORA-19809: limit exceeded for recovery files
ORA-00312: online log 3 thread 1: '+REDO1/db01/onlinelog/group_3.310.857090421'
ORA-00312: online log 3 thread 1: '+REDO2/db01/onlinelog/group_3.310.857090421'
USER (ospid: 45220056): terminating the instance due to error 16038

Instance is terminated due to error 16038: log 3 sequence# 32464 cannot be archived. Redo log cannot be archived because the recovery area is 100% used.

Backup archive log and release space by running:

$ rman target /

Recovery Manager: Release 11.2.0.3.0 - Production on Mon Apr 27 14:17:52 2015

Copyright (c) 1982, 2011, Oracle and/or its affiliates. All rights reserved.

connected to target database (not started)

RMAN> startup mount

Oracle instance started
database mounted

Total System Global Area 835104768 bytes

Fixed Size 2226096 bytes
Variable Size 532678736 bytes
Database Buffers 276824064 bytes
Redo Buffers 23375872 bytes

RMAN> backup archivelog all delete all input;

... ...

Try to open database:

RMAN> alter database open;

database opened

Database is opened successfully.