10g and 11g RAC

diff between 10 rac and 11g rac.

1.In 10g we have ocr files but where as in 11g we have olr files.
2.In 11g we have ocr and votting disk files on asm.
3.scan is not there in 10g and where as scan is introduced in 11g.

can you please give more differences.

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difference between the standalone instance tnsnames.ora and the RAC instance tnsnames.ora

ans) the main difference is the vip IP adress will be there in RAC tnsnames.ora

any moore please add.

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there are many possible reasons for eviction of node in cluster.

-->becuase of network problem mainly private interconnect.