diff --git a/FreeSql/MySql/MySqlAdo/MySqlConnectionPool.cs b/FreeSql/MySql/MySqlAdo/MySqlConnectionPool.cs
index 41355ae3..ac677353 100644
--- a/FreeSql/MySql/MySqlAdo/MySqlConnectionPool.cs
+++ b/FreeSql/MySql/MySqlAdo/MySqlConnectionPool.cs
@@ -2,6 +2,7 @@
 using SafeObjectPool;
 using System;
 using System.Collections.Concurrent;
+using System.Collections.Generic;
 using System.Data;
 using System.Data.Common;
 using System.Text.RegularExpressions;
@@ -59,8 +60,15 @@ namespace FreeSql.MySql {
 					Regex.Replace(connStr, poolsizePatern, $"Max pool size={PoolSize}", RegexOptions.IgnoreCase) :
 					$"{connStr};Max pool size={PoolSize}";
 
-				var initConns = new Object<DbConnection>[poolsize];
-				for (var a = 0; a < poolsize; a++) try { initConns[a] = _pool.Get(); } catch { }
+				var initConns = new List<Object<DbConnection>>();
+				for (var a = 0; a < PoolSize; a++)
+					try {
+						var conn = _pool.Get();
+						initConns.Add(conn);
+						conn.Value.Ping(true);
+					} catch {
+						break; //预热失败一次就退出
+					}
 				foreach (var conn in initConns) _pool.Return(conn);
 			}
 		}
diff --git a/FreeSql/Oracle/OracleAdo/OracleConnectionPool.cs b/FreeSql/Oracle/OracleAdo/OracleConnectionPool.cs
index e108a45a..067baef2 100644
--- a/FreeSql/Oracle/OracleAdo/OracleConnectionPool.cs
+++ b/FreeSql/Oracle/OracleAdo/OracleConnectionPool.cs
@@ -74,8 +74,15 @@ namespace FreeSql.Oracle {
 					Regex.Replace(connStr, poolsizePatern, $"Max pool size={PoolSize}", RegexOptions.IgnoreCase) :
 					$"{connStr};Max pool size={PoolSize}";
 
-				var initConns = new Object<DbConnection>[poolsize];
-				for (var a = 0; a < poolsize; a++) try { initConns[a] = _pool.Get(); } catch { }
+				var initConns = new List<Object<DbConnection>>();
+				for (var a = 0; a < PoolSize; a++)
+					try {
+						var conn = _pool.Get();
+						initConns.Add(conn);
+						conn.Value.Ping(true);
+					} catch {
+						break; //预热失败一次就退出
+					}
 				foreach (var conn in initConns) _pool.Return(conn);
 			}
 		}
diff --git a/FreeSql/PostgreSQL/PostgreSQLAdo/PostgreSQLConnectionPool.cs b/FreeSql/PostgreSQL/PostgreSQLAdo/PostgreSQLConnectionPool.cs
index 3c8f842c..1100a6e5 100644
--- a/FreeSql/PostgreSQL/PostgreSQLAdo/PostgreSQLConnectionPool.cs
+++ b/FreeSql/PostgreSQL/PostgreSQLAdo/PostgreSQLConnectionPool.cs
@@ -69,8 +69,15 @@ namespace FreeSql.PostgreSQL {
 					Regex.Replace(connStr, poolsizePatern, $"Maximum pool size={PoolSize}", RegexOptions.IgnoreCase) :
 					$"{connStr};Maximum pool size={PoolSize}";
 
-				var initConns = new Object<DbConnection>[poolsize];
-				for (var a = 0; a < poolsize; a++) try { initConns[a] = _pool.Get(); } catch { }
+				var initConns = new List<Object<DbConnection>>();
+				for (var a = 0; a < PoolSize; a++)
+					try {
+						var conn = _pool.Get();
+						initConns.Add(conn);
+						conn.Value.Ping(true);
+					} catch {
+						break; //预热失败一次就退出
+					}
 				foreach (var conn in initConns) _pool.Return(conn);
 			}
 		}
diff --git a/FreeSql/SqlServer/SqlServerAdo/SqlServerConnectionPool.cs b/FreeSql/SqlServer/SqlServerAdo/SqlServerConnectionPool.cs
index b53f258c..29119c03 100644
--- a/FreeSql/SqlServer/SqlServerAdo/SqlServerConnectionPool.cs
+++ b/FreeSql/SqlServer/SqlServerAdo/SqlServerConnectionPool.cs
@@ -1,6 +1,7 @@
 using SafeObjectPool;
 using System;
 using System.Collections.Concurrent;
+using System.Collections.Generic;
 using System.Data;
 using System.Data.Common;
 using System.Data.SqlClient;
@@ -63,8 +64,15 @@ namespace FreeSql.SqlServer {
 					Regex.Replace(connStr, poolsizePatern, $"Max pool size={PoolSize}", RegexOptions.IgnoreCase) :
 					$"{connStr};Max pool size={PoolSize}";
 
-				var initConns = new Object<DbConnection>[poolsize];
-				for (var a = 0; a < poolsize; a++) try { initConns[a] = _pool.Get(); } catch { }
+				var initConns = new List<Object<DbConnection>>();
+				for (var a = 0; a < PoolSize; a++)
+					try {
+						var conn = _pool.Get();
+						initConns.Add(conn);
+						conn.Value.Ping(true);
+					} catch {
+						break; //预热失败一次就退出
+					}
 				foreach (var conn in initConns) _pool.Return(conn);
 			}
 		}
diff --git a/FreeSql/Sqlite/SqliteAdo/SqliteConnectionPool.cs b/FreeSql/Sqlite/SqliteAdo/SqliteConnectionPool.cs
index da0c9514..4dda5649 100644
--- a/FreeSql/Sqlite/SqliteAdo/SqliteConnectionPool.cs
+++ b/FreeSql/Sqlite/SqliteAdo/SqliteConnectionPool.cs
@@ -71,8 +71,15 @@ namespace FreeSql.Sqlite {
 					Attaches = (idx == -1 ? att[1] : att[1].Substring(0, idx)).Split(',');
 				}
 
-				var initConns = new Object<DbConnection>[poolsize];
-				for (var a = 0; a < poolsize; a++) try { initConns[a] = _pool.Get(); } catch { }
+				var initConns = new List<Object<DbConnection>>();
+				for (var a = 0; a < PoolSize; a++)
+					try {
+						var conn = _pool.Get();
+						initConns.Add(conn);
+						conn.Value.Ping(true);
+					} catch {
+						break; //预热失败一次就退出
+					}
 				foreach (var conn in initConns) _pool.Return(conn);
 			}
 		}