我正在使用 magento soap v2 api。我做了很多 salesOrderCreditmemoAddComment 和 salesOrderInvoiceAddComment。过了一会儿，他们停止工作，我收到以下错误：
无法覆盖最终方法 Mage_Core_Model_Abstract::clearInstance()
其他 api 请求，如 catalogInventoryStockItemMultiUpdate、登录和结束会话工作正常。在我重新启动 apache 后，添加评论请求再次开始工作。我已经通过将评论直接写入 MYSQL 来解决它，但是有人知道为什么会这样吗？
I know this is old, but I have found this which is helpful: http://www.magentocommerce.com/boards%20/viewthread/378965/
I came across this problem once before after we had an outage, in our case, the Apache restart cleared it up, but i would look at that link: there's some interesting APC config changes that may (or may not) prevent it from re-occurring.