DataGuard日志无法同步，报错：CORRUPTION DETECTED: In redo blocks starting at block ......

DataGuard日志无法同步，报错如下图：

After further investigation, it would seem that the Cisco switches being used between our primary and standby sites had “SQL*Net inspection enabled” by default (deep packet inspection).  As a result, because we were using the default 1521 listener port, packets were being scanned and reaching the standby site in a malformed/corrupted state.

Disable this feature wasn’t so straight forward unfortunately, so as a work around (and to avoid other 1521 port scanning protocols interfering), I opted to change the Data Guard listener port instead from 1521 to 1528 by adding another listener service.