R12.2

[raam]

Hi Erman,

Need your expertise on below information

File system synchronization may be done by applying the delta (changes) from the previous patching cycle, or by re-creating the entire patch edition file system as a fresh copy of the run edition (called "fs_clone"). When complete, check the exiting status code (success is '0'):

1)We know that it will execute adconfigchangedetector to identify the changes.but how it keeps track of changes(delta changes)
2)if some weblogic configuration changed,will adop apply only changed configuration itself or will it run fsclone
3)under what scenarios,it will go for fsclone

Best regards

[ErmanArslansOracleBlog]

Config changes is detected using java -> oracle.apps.ad.tools.configuration.ConfigChangeDetector

As, it is commented in the related script, it compares the files (backup and actual ones) to detect the changes.

Ref:
 "\t        -detectConfigChanges : Compare the context file, HTTP config files and the WLS config files "
                                                  . " to detect if there has been any config change. This option requires the -backupdir parameter. \n"

[satish]

If it detects some config change in WLS config files,then how it will sync?

[ErmanArslansOracleBlog]

It just syncs..
Remember, in cutover, we start the WLS related things from the patch fs.
so this syncs happens from run to patch and that's why it is secure.
We write the things in run fs, to patch fs. We don't do other way around. So , we sync and then we start ..

Probably, by copying, or the code may take the changed values into variables and then writes it to the wls config files using filesystem related functions defined in the related coding language. (probably java) :)
This is also an assumption.
So, this answer is just a comment. I didn't write the code. I didn't analyzed it. So if you ask how, then  we need to do a reverse engineering :) Unfortuneatly, I m in a vacation :) so I may check when I return.

[satish]

Thank you, happy vacation