ERROR: right sibling's left-link doesn't match: block 5 links to 8 instead of expected 2 in index "pg_toast_2619_index"

[Raghavendra Rao J S V <raghavendrajsv@xxxxxxxxx>]

Hi All,

We are facing below error in my postgres 9.2 production database. Please help us how to resolve and why we are facing this issue and impact of the issue. 

ERROR:  right sibling's left-link doesn't match: block 5 links to 8 instead of expected 2 in index "pg_toast_2619_index"

CONTEXT:  automatic vacuum of table "qovr.pg_toast.pg_toast_2619"

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Regards,
Raghavendra Rao J S V