WLST.CMD NameError on oamSetWhiteListMode but no COMMON\BIN under OAM_ORACLE_HOME

Hello,

My managed OAM server oam_server1 works OK in a base_domain Domain but somehow I do not have COMMON\BIN under OAM_ORACLE_HOME to have a PRODUCT specific WLST to set  the extensions for OAM.

How can I start WLST.CMD from WLS common home and add the extensions for OAM to avoid the NameError?  My current dilemma is shown in the screen dump below:

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wls:/base_domain/serverConfig> domainRuntime()
Location changed to domainRuntime tree. This is a read-only tree with DomainMBean as the root.
For more help, use help(domainRuntime)

wls:/base_domain/domainRuntime> oamSetWhiteListMode(oamWhiteListMode="true")