channel t3: starting piece 1 at 27-APR-12RMAN-03009: failure of backup command on t3 channel at 04/27/2012 21:17:21ORA-19502: write error on file "aon9gdnc_1_1", blockno 851545089 (blocksize=512)ORA-27030: skgfwrt: sbtwrite2 returned errorORA-19511: ...(more)