Multi-Node to Single-Node Cloning in R12 and 11i

Posted in: Technical Track

Anybody who has tried this multi-node to single-node cloning in 11i knows that it’s difficult and very error-prone. If we outline the Apps Tier cloning process, it looks like this (supposing we have a two-node instance with the DB and CM on one node, and Web and Forms on the other):

# CM Node
# copy all files to the target
$ perl appsTier merge

# Web Node
# copy $COMMON_TOP/clone/appl directory only to the target
$ perl appltop merge

# Target Node
$ perl appsTier

This process is called merging appltops. It’s not as easy as it looks. Many times, the production environment might not have proper values in the fnd_nodes table, which makes fail to properly recognize the appltops for merging.

But in R12, life is made easy. It employs a new concept called Unified Appltop, which means that no matter what you choose while installing, R12 will install a complete apps file system on all nodes. In the case of 11i, RapidInstall copies from the Staging Area only reports on CM nodes and Forms on the Web nodes. The only downside with the R12 unified appltop is the additional disk space required on all nodes. But, with storage being lot cheaper nowadays, it shouldn’t be much of a problem.

To do the same multi-node to single-node cloning in R12, there is no need to pass any extra arguments. All you need to do is choose a node for running appsTier, copy that node to target system, and run

Happy cloning!

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About the Author

Vasu Balla’s colleagues call him “Eagle Eye” for a reason – his diverse technical background enables him to view his clients’ systems from a 360-degree angle, giving him a higher level of understanding. Vasu is well known for being approachable, and he truly enjoys helping people. Even former colleagues reach out to Vasu when they are really stuck on an issue. When he isn’t working, Vasu can be found in the kitchen trying new recipes.

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