Patch_Oracle_10_2_0_3_win - missed a step 5.5

[baberamin]

Hi,

I was applying Patch_Oracle_10_2_0_3_win on an Oracle server 10.2.0.1 and unfortunately I missed a step '5.5 Update Oracle Time Zone Definitions'.

Then I started following section '8 Removing the Patch Set Software' and in step 5 it says to restore Oracle 10g installation from backup (backup before applying patch). After that in step 6 and sub step 2 its asks to run 'catdwgrd.sql'.

My question is when I have resotred the whole Oracle folder (which Includes data, control files etc etc). Then why these further steps are required?