**important _disable_logging is an advanced parameter and you should
not be set**
in my test of upgrades I was using _disable_logging, to understand
how it works.
I had to do an upgrade from 9.2 to 184.108.40.206 to 10.2.
I'm not thinking in use on production. I only want to understand it.
I enabled it in the upgrade process and disable after the next upgrade step.
Every thing was ok.
Finally once migrated having _disable_logging=false
I run a long script which run correctly and at the end of the script,
I suppose in the moment of a logswitch, I got the following error:ORA-00354
: corrupt redo log block headerORA-00353
: log corruption near block 2 change 105990334 time 05/11/2006 09:06:19ORA-00312
: online log 2 thread 1: 'E:\ORASERP\LOGFILES\LOG_2SERP.ORA'ORA-00312
: online log 2 thread 1: 'D:\ORASERP\LOGFILES\LOG_2SERP.ORA'
I tried an ALTER DATABASE CLEAR UNARCHIVED LOGFILE
'E:\ORASERP\LOGFILES\LOG_2SERP.ORA'; and I received a message the file
Why does it happen?
I suppose if I would had done an ALTER SYSTEM SWITCH LOGFILE;
or an ALTER DATABASE CLEAR UNARCHIVED LOGFILE
In some moment, this problem wouldn't had happen.
But I can't get it, why if everything was ok, in the moment of switch
it get an error log corrupt.
Thank you :)
Oracle Certified Profesional 9i 10g
Orace Certified Professional Developer 6i
8 years of experience in Oracle 7,8i,9i,10g and developer 6i