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偶爾我在Postgres中遇到這些錯誤。偶爾有PostgresSQL連接錯誤
org.postgresql.util.PSQLException: Connection refused. Check that the hostname and port are correct and that the postmaster is accepting TCP/IP connections.
和
org.postgresql.util.PSQLException: FATAL: sorry, too many clients already
,當我重新啓動服務器收到此錯誤後,我的數據庫會工作。