This is a text description of admin053.gif. This figure shows two multiplexed online redo log configurations. One is labeled LEGAL. The other is labeled ILLEGAL. The LEGAL configuration shows DISK A and DISK B, which contain 3 online redo log groups, each with 2 members. The ILLEGAL configuration shows DISK A and DISK B, but they contain only one online redo log group with 2 members. This is illegal because there must be at least 2 online redo log groups.
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