adop phase=fs_clone fails during Validation of /etc/hosts

 Issue:  Running fs_clone using command adop phase=fs_clone fails during txkADOPValidations.pl script

Error Details:

Error message from ADOPValidations log file

[ERROR]: Required content is missing from /etc/hosts file.

Cause:  

There are duplicate entries for localhost in /etc/hosts file in one of the slave nodes.

Solution:

Correct the entries in /etc/hosts and re-run fs_clone

Follow steps mentioned in MOS document:

adop phase=fs_clone Ends with "[ERROR]: Required content is missing from /etc/hosts file" (Doc ID 2815387.1)

Query to check High Watermark in Datafiles

 set verify off

column file_name format a50 word_wrapped

column smallest format 999,990 heading "Smallest|Size|Poss."

column currsize format 999,990 heading "Current|Size"

column savings  format 999,990 heading "Poss.|Savings"

break on report

compute sum of savings on report

column value new_val blksize

select value from v$parameter where name = 'db_block_size';

/

select file_name,

       ceil( (nvl(hwm,1)*&&blksize)/1024/1024 ) smallest,

       ceil( blocks*&&blksize/1024/1024) currsize,

       ceil( blocks*&&blksize/1024/1024) -

       ceil( (nvl(hwm,1)*&&blksize)/1024/1024 ) savings

from dba_data_files a,

     ( select file_id, max(block_id+blocks-1) hwm

         from dba_extents

        group by file_id ) b

where a.file_id = b.file_id(+) order by savings desc

/