ORA-27192: skgfcls: sbtclose2 returned error - failed to close file
ORA-19511: Error received from media manager layer, error text:
Failed to process backup file ORCL_29348_p39487290.bk
You can continue to run you RMAN scripts from the break point of last run for a workaround. Or, just re-run your RMAN scripts of restoring archived logs, RMAN will skip the restored archived logs and proceed:
archive log thread 2 sequence 205498 is already on disk as file /oracle/oradata/arch/orcl_2_205498.arc
Possibly, you have to check the shared memory or other resource limits related to IO on this server.