Hey @xubo_game, Welcome to openGauss Community.
All of the projects in openGauss Community are maintained by @opengauss-bot.
That means the developers can comment below every pull request or issue to trigger Bot Commands.
Please follow instructions at https://gitee.com/opengauss/community/blob/master/contributors/command.en.md to find the details.

/assign

this issue is assigned to: @cchen676.

1. 打开极致RTO时，备机不可读，导致发送修改pg_replication_slots的命令给保留的备机时报错，之前的逻辑是每个备机都会查一把，有符合条件的话就修改，没有的话就pass
2. 因为物理复制时，pg_replication_slots的修改没有在主备间同步，正常情况下不需要维护备机的replication_slots，备机升主时会自动生成，但是存在反复倒换的场景，主备来回多次切换，可能存在主备都有的情况
3. 修改方案：经测试，replication_slots的修改可以只在主机操作，修改时在会话级别打开enable_slog_log开关后，删除slot的操作会生成xlog，备机可以通过回放这条xlog删除自己的

/hdc-p-challenge