Apparently, RAM is an issue. For the Lightsail 2GB/2GB, the clean installation is about 3.5-4x faster and the rebuilding of the import container was about (or even over) 10x faster.
Still, I’m afraid the import script might not work for phpBB 3.3.3. Anyway, I tried twice with the same result: only one word from one category name (out of ~10 categories) was imported as one empty “category”. The MySQL textual dump is pretty small 2.66MB. All table prefixes are as required. No images, no smilies etc.
All in all, no forums, no forum categories or posts, but all (a few hundred) users were imported correctly along with their statistics.
It seems phpBB 3.3.3 was the update that changed something about the used MySQL version, but this is a dump file here, so it shouldn’t matter after all.
Any ideas what else can be checked?
RAM 确实 是个问题。对于 Lightsail 2GB/2GB，干净安装的速度快了约 3.5-4 倍，导入容器的重建速度快了约（甚至超过）10 倍。
不过，我担心导入脚本可能不适用于 phpBB 3.3.3。无论如何，我尝试了两次，结果都一样：在约 10 个类别中，只有一个类别名称中的一个单词被导入为一个空的“类别”。MySQL 文本转储文件很小，只有 2.66MB。所有表前缀都符合要求。没有图片，没有表情符号等。
总而言之，没有论坛，没有论坛类别或帖子，但所有（几百个）用户及其统计数据都已正确导入。
似乎 phpBB 3.3.3 是更新了使用的 MySQL 版本，但这是一个转储文件，所以最终应该无关紧要。
还有什么可以检查的吗？