While taking pgdump we are getting error message cache lookup failed for function 7418447. While trying select * from pg_proc where oid=7418447 returns zero rows. Please help us on this.
Searching on that error messages yields a suggestion from Tom Lane to try that select with enable_indexscan and enable_bitmapscan
turned off.
This question is probably better asked in the "General" mailing list. Also please include the OS and PostgreSQL version as well as any other observations that may shed light on the issue.