RMAN backup failed and ORA-07445

Can anyone help on the below.

RMAN backup failed with the below error msg on both primary and physical standby server: At the same time alert log has captured an error message

*RMAN Error log:*

channel ch02: starting piece 1 at 13-JUN-14

RMAN-03009: failure of backup command on ch00 channel at 06/13/2014 02:31:00

RMAN-10038: database session for channel ch00 terminated unexpectedly

channel ch00 disabled, job failed on it will be run on another channel

RMAN-03009: failure of backup command on ch01 channel at 06/13/2014 02:31:00

RMAN-10038: database session for channel ch01 terminated unexpectedly

channel ch01 disabled, job failed on it will be run on another channel

RMAN-00571: ===========================================================

RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============

RMAN-00571: ===========================================================

RMAN-03009: failure of backup command on ch02 channel at 06/13/2014 02:31:00

RMAN-10038: database session for channel ch02 terminated unexpectedly

Recovery Manager complete.

*Alert log :*

ORA-07445: exception encountered: core dump [pwrite64()+19] [SIGXFSZ] [ADDR:0x1F6000004D6] [PC:0x322B40E613] [unknown code] []

ORA-07445: exception encountered: core dump [pwrite64()+19] [SIGXFSZ] [ADDR:0x1F6000004D6] [PC:0x322B40E613] [unknown code] []

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