how to enable and disable changelog in OID 11g

To enable and disable changelog.

to disable
change value to orclgeneratechangelog: 0  and run ldapmodify command

to Enable
orclgeneratechangelog: 1   set value to 1


here is reset instructions.
You can enable and disable change log generation by using ldapmodify to change the value of orclgeneratechangelog, which is an instance-specific attribute. You enable change log generation by setting the value to 1 and disable it by setting the value to 0. The command is:

ldapmodify -D cn=orcladmin -q -p portNum -h hostname -f ldifFile 

The LDIF file for changing the value of the orclgeneratechangelog attribute in the instance-specific entry to 1 looks like this:

dn: cn=componentname,cn=osdldapd,cn=subconfigsubentry
changetype: modify
replace: orclgeneratechangelog
orclgeneratechangelog: 1