no connection to the server

FireDAC no connection to the server

---

[FireDAC][Comp][Clnt]-507. 接続 [FDConnection1: TFDConnection] をプールできません。考え得る理由: 接続定義が FDManager.ConnectionDefs リストに含まれていない、または TFDConnection.Params に追加のパラメータがある.

Pooled=True

POOL_CleanupTimeout=30000

POOL_ExpireTimeout=90000

POOL_MaximumItems=50

プールクリーンアップタイムアウト

POOL期限切れタイムアウト

プールの最大アイテム

---

---

show all;

"tcp_keepalives_count""9""Maximum number of TCP keepalive retransmits."

"tcp_keepalives_idle""7200""Time between issuing TCP keepalives."

"tcp_keepalives_interval""75""Time between TCP keepalive retransmits."

"tcp_user_timeout""0""TCP user timeout."

---

show tcp_keepalives_idle

show tcp_keepalives_idle;

---

Postgresで現在の接続数を確認する

SELECT * FROM pg_stat_activity;