Hello Venkatesh,
There's been no follow up since 2012, so I will be closing this ITS. I assume the issue was resolved by downgrading BDB. If you still encounter this issue with the current OpenLDAP release, feel free to follow up and I will reopen the ITS.
Regards, Quanah
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Quanah Gibson-Mount Product Architect Symas Corporation Packaged, certified, and supported LDAP solutions powered by OpenLDAP: http://www.symas.com