RAC and the Single Point of Failure

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The DBA for Horatio's Woodscrews is no fool. He knows that he needs to transition the data to a RAC cluster. As part of the preparation, he has configured the Sales Department's smaller database on a RAC cluster with two nodes. He set it up quickly, with minimal configuration, and it's been running smoothly for a few weeks.

However, the network configuration issues that affected the production database had also affected the Sales system. One of the nodes in the cluster was not available on the network. The DBA wasn't worried, however, because the other node was still available.

But one of the files was asking for media recovery, so the DBA issued the recovery command and it asked for an archivelog that was required for recovery. The DBA pressed ENTER to accept the default archivelog. But the media recovery session failed. He looked a little closer, and noted that the requested archivelog was on the unavailable node. Suddenly, his RAC cluster was not operational as he waited for the other node to become available so he could perform recovery.



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Oracle Database 10g. High Availablity with RAC Flashback & Data Guard
Oracle Database 10g. High Availablity with RAC Flashback & Data Guard
ISBN: 71752080
EAN: N/A
Year: 2003
Pages: 134

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