Ques: What kind of backup: rman or manual? And what was the version of Oracle, 8i? If the answer is rman then the question becomes does rman backup blocks marked as non-recoverable? HTH -- Mark D Powell -- ________________________________ From: oracle-l-bounce@xxxxxxxxxxxxx [mailto:oracle-l-bounce@xxxxxxxxxxxxx] On Behalf Of Marquez, Chris Sent: Thursday, August 11, 2005 2:11 PM To: oracle-l@xxxxxxxxxxxxx Subject: ORA-1578...block corrupted...error is normal...a block...had a NOLOGGING...operation performed against I can NOT believe the if I used NOLOGGING to create and INDEX "long ago" *and* had many, many subsequent FULL BACKUPS that it could/did effect or error on a future recovery? Again, we are getting this error after full db recovery on indexes created (NOLOGGING), well before the FULL backup and thus no "NOLOGGING" objects in any of the arch logs applied...what gives? Chris Marquez Oracle DBA ERROR at line 1: ORA-01578: ORACLE data block corrupted (file # 59, block # 763411) ORA-01110: data file 59: '/o04/oradata/orcl/e_indx_05.dbf' ORA-26040: Data block was loaded using the NOLOGGING option .... ORA-1578 is reported when a block is thought to be corrupt on read. Note that in Oracle8i the ORA-1578 reports the RELATIVE FILE NUMBER and not the ABSOLUTE FILE NUMBER. The error should be accompanied by an ORA-1110 error indicating the absolute file number and name. ... c) (oThis error is normal if accessing a block which has had a NOLOGGINGr UNRECOVERABLE) operation performed against it and has since been recovered. In Oracle8i this case also reports: "ORA-26040: Data block was loaded using the NOLOGGING option"