Can I use shrink for Tables and Indexes

Hi Experts,
I am planning to run shrink on large tables and indexes to reclaim space, I would like to know what are the dis-advantages or limitations of shrink on e-business suite.
Architecture
Four node application server (R12.1.1)
Four node rac db (11gr2)
HP OS.

Hi;
Please see:
Using SHRINK or DELETE on tables FND_LOG_MESSAGES, FND_TEMP_FILE_PARAMETERS, FND_LOBS in EBS [ID 1066580.1]
Regard
Helios

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