Couldn't get connection because we are at maximum connection count (150/150) and there are none 異常解決

系統運作一段時間後發現出現這樣的異常:

couldn't get connection because we are at maximum connection count (150/150) and there are none available

解決方案：

1、修改連接配接池的最大的連接配接數：

2、更改hibernate.connection.release_mode配置的模式為：after_transaction

hibernate 的連接配接釋放模式：hibernate.connection.release_mode 有三個選擇：after_statement/after_transaction/on_close，預設的是on_close是以，這裡要改成after_transaction