Weblogic Admin server not starting

Weblogic Admin server not starting, was giving a server subsystem failed error, pointing to Embedded LDAP error. Turns out there was a corrupt file replicas.prop. Delete this file and start the Admin server again. Probable cause is disk being full.

Followed below two blogs
http://weblogic.middlewarebase.com/2011/10/javalangnumberformatexception-null.html
http://www.xenta.nl/blog/2012/09/28/server-subsystem-failed-reason-java-lang-numberformatexception-null/

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