Shulou(Shulou.com)06/01 Report--

[detailed description of the problem]

The data written by the primary node has not been synchronized by the standby node.

[solution]

1. First check whether the standby node is faulty, if there is no failure, check the log of the standby node to see what the node was doing at that time.

Node log: database installation directory / database/data/svcname/diaglog/sdbdiag.log

two。 This problem can be seen from the log that the slave node failed to start the synchronization task thread, and the thread failed in the following cases:

1) insufficient file handles. You can check the number of handles currently used through / proc/sys/fs/file-nr

2) the thread number is not enough

3) insufficient local port number

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