Self-Healing ORA-01578 's 2004-04-19 - By Singer, Phillip (P.W.)
This actually happened to me Saturday Night:
Running my 4-way Linux box (4.21 Kernel) with 9.2.0 (and
using a SAN for my disks) I discovered a ORA-01578 (See ORA-01578.ora-code.com). After
several hours of work with Oracle support, running dbverify,
and creating test queries, we determined that there really
was block corruption.
We used dbms_repair to get everything but the bad block,
and were getting ready to see what would happen on a
tablespace recovery, when the backup group decided to
stop the instance to do a cold backup (I work for a large
organization, with every task subdivided, with little
communication).
When the instance came back up the block corruption was
gone. This is the one part of the whole affair that I find
incredible. Does someone have an idea as to how bouncing
an instance can fix block corruption which was proven by
dbverivy?
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