fix(db): correct connection pool assignment in GORM adapter

* Implement reconnect functionality in GormAdapter and other database adapters.
* Introduce a DBFactory to handle reconnections.
* Update health check logic to skip reconnects for transient failures.
* Add tests for reconnect behavior in DatabaseAuthenticator.

.gitignore

@@ -29,3 +29,4 @@ test.db
 tests/data/
 node_modules/
 resolvespec-js/dist/
+.codex

pkg/common/adapters/database/gorm.go

@@ -4,6 +4,7 @@ import (
 	"context"
 	"fmt"
 	"strings"
+	"sync"
 
 	"gorm.io/gorm"
 
@@ -15,7 +16,9 @@ import (
 
 // GormAdapter adapts GORM to work with our Database interface
 type GormAdapter struct {
+	dbMu       sync.RWMutex
 	db         *gorm.DB
+	dbFactory  func() (*gorm.DB, error)
 	driverName string
 }
 
@@ -27,10 +30,72 @@ func NewGormAdapter(db *gorm.DB) *GormAdapter {
 	return adapter
 }
 
+// WithDBFactory configures a factory used to reopen the database connection if it is closed.
+func (g *GormAdapter) WithDBFactory(factory func() (*gorm.DB, error)) *GormAdapter {
+	g.dbFactory = factory
+	return g
+}
+
+func (g *GormAdapter) getDB() *gorm.DB {
+	g.dbMu.RLock()
+	defer g.dbMu.RUnlock()
+	return g.db
+}
+
+func (g *GormAdapter) reconnectDB(targets ...*gorm.DB) error {
+	if g.dbFactory == nil {
+		return fmt.Errorf("no db factory configured for reconnect")
+	}
+
+	freshDB, err := g.dbFactory()
+	if err != nil {
+		return err
+	}
+
+	g.dbMu.Lock()
+	previous := g.db
+	g.db = freshDB
+	g.driverName = normalizeGormDriverName(freshDB)
+	g.dbMu.Unlock()
+
+	if previous != nil {
+		syncGormConnPool(previous, freshDB)
+	}
+
+	for _, target := range targets {
+		if target != nil && target != previous {
+			syncGormConnPool(target, freshDB)
+		}
+	}
+
+	return nil
+}
+
+func syncGormConnPool(target, fresh *gorm.DB) {
+	if target == nil || fresh == nil {
+		return
+	}
+
+	if target.Config != nil && fresh.Config != nil {
+		target.ConnPool = fresh.ConnPool
+	}
+
+	if target.Statement != nil {
+		if fresh.Statement != nil && fresh.Statement.ConnPool != nil {
+			target.Statement.ConnPool = fresh.Statement.ConnPool
+		} else if fresh.Config != nil {
+			target.Statement.ConnPool = fresh.ConnPool
+		}
+		target.Statement.DB = target
+	}
+}
+
 // EnableQueryDebug enables query debugging which logs all SQL queries including preloads
 // This is useful for debugging preload queries that may be failing
 func (g *GormAdapter) EnableQueryDebug() *GormAdapter {
+	g.dbMu.Lock()
 	g.db = g.db.Debug()
+	g.dbMu.Unlock()
 	logger.Info("GORM query debug mode enabled - all SQL queries will be logged")
 	return g
 }
@@ -44,19 +109,19 @@ func (g *GormAdapter) DisableQueryDebug() *GormAdapter {
 }
 
 func (g *GormAdapter) NewSelect() common.SelectQuery {
-	return &GormSelectQuery{db: g.db, driverName: g.driverName}
+	return &GormSelectQuery{db: g.getDB(), driverName: g.driverName, reconnect: g.reconnectDB}
 }
 
 func (g *GormAdapter) NewInsert() common.InsertQuery {
-	return &GormInsertQuery{db: g.db}
+	return &GormInsertQuery{db: g.getDB(), reconnect: g.reconnectDB}
 }
 
 func (g *GormAdapter) NewUpdate() common.UpdateQuery {
-	return &GormUpdateQuery{db: g.db}
+	return &GormUpdateQuery{db: g.getDB(), reconnect: g.reconnectDB}
 }
 
 func (g *GormAdapter) NewDelete() common.DeleteQuery {
-	return &GormDeleteQuery{db: g.db}
+	return &GormDeleteQuery{db: g.getDB(), reconnect: g.reconnectDB}
 }
 
 func (g *GormAdapter) Exec(ctx context.Context, query string, args ...interface{}) (res common.Result, err error) {
@@ -65,7 +130,15 @@ func (g *GormAdapter) Exec(ctx context.Context, query string, args ...interface{
 			err = logger.HandlePanic("GormAdapter.Exec", r)
 		}
 	}()
-	result := g.db.WithContext(ctx).Exec(query, args...)
+	run := func() *gorm.DB {
+		return g.getDB().WithContext(ctx).Exec(query, args...)
+	}
+	result := run()
+	if isDBClosed(result.Error) {
+		if reconnErr := g.reconnectDB(); reconnErr == nil {
+			result = run()
+		}
+	}
 	return &GormResult{result: result}, result.Error
 }
 
@@ -75,15 +148,32 @@ func (g *GormAdapter) Query(ctx context.Context, dest interface{}, query string,
 			err = logger.HandlePanic("GormAdapter.Query", r)
 		}
 	}()
-	return g.db.WithContext(ctx).Raw(query, args...).Find(dest).Error
+	run := func() error {
+		return g.getDB().WithContext(ctx).Raw(query, args...).Find(dest).Error
+	}
+	err = run()
+	if isDBClosed(err) {
+		if reconnErr := g.reconnectDB(); reconnErr == nil {
+			err = run()
+		}
+	}
+	return err
 }
 
 func (g *GormAdapter) BeginTx(ctx context.Context) (common.Database, error) {
-	tx := g.db.WithContext(ctx).Begin()
+	run := func() *gorm.DB {
+		return g.getDB().WithContext(ctx).Begin()
+	}
+	tx := run()
+	if isDBClosed(tx.Error) {
+		if reconnErr := g.reconnectDB(); reconnErr == nil {
+			tx = run()
+		}
+	}
 	if tx.Error != nil {
 		return nil, tx.Error
 	}
-	return &GormAdapter{db: tx, driverName: g.driverName}, nil
+	return &GormAdapter{db: tx, dbFactory: g.dbFactory, driverName: g.driverName}, nil
 }
 
 func (g *GormAdapter) CommitTx(ctx context.Context) error {
@@ -100,24 +190,37 @@ func (g *GormAdapter) RunInTransaction(ctx context.Context, fn func(common.Datab
 			err = logger.HandlePanic("GormAdapter.RunInTransaction", r)
 		}
 	}()
-	return g.db.WithContext(ctx).Transaction(func(tx *gorm.DB) error {
-		adapter := &GormAdapter{db: tx, driverName: g.driverName}
-		return fn(adapter)
-	})
+	run := func() error {
+		return g.getDB().WithContext(ctx).Transaction(func(tx *gorm.DB) error {
+			adapter := &GormAdapter{db: tx, dbFactory: g.dbFactory, driverName: g.driverName}
+			return fn(adapter)
+		})
+	}
+	err = run()
+	if isDBClosed(err) {
+		if reconnErr := g.reconnectDB(); reconnErr == nil {
+			err = run()
+		}
+	}
+	return err
 }
 
 func (g *GormAdapter) GetUnderlyingDB() interface{} {
-	return g.db
+	return g.getDB()
 }
 
 func (g *GormAdapter) DriverName() string {
-	if g.db.Dialector == nil {
+	return normalizeGormDriverName(g.getDB())
+}
+
+func normalizeGormDriverName(db *gorm.DB) string {
+	if db == nil || db.Dialector == nil {
 		return ""
 	}
 	// Normalize GORM's dialector name to match the project's canonical vocabulary.
 	// GORM returns "sqlserver" for MSSQL; the rest of the project uses "mssql".
 	// GORM returns "sqlite" or "sqlite3" for SQLite; we normalize to "sqlite".
-	switch name := g.db.Name(); name {
+	switch name := db.Name(); name {
 	case "sqlserver":
 		return "mssql"
 	case "sqlite3":
@@ -130,6 +233,7 @@ func (g *GormAdapter) DriverName() string {
 // GormSelectQuery implements SelectQuery for GORM
 type GormSelectQuery struct {
 	db             *gorm.DB
+	reconnect      func(...*gorm.DB) error
 	schema         string // Separated schema name
 	tableName      string // Just the table name, without schema
 	tableAlias     string
@@ -347,6 +451,7 @@ func (g *GormSelectQuery) PreloadRelation(relation string, apply ...func(common.
 
 		wrapper := &GormSelectQuery{
 			db:         db,
+			reconnect:  g.reconnect,
 			driverName: g.driverName,
 		}
 
@@ -385,6 +490,7 @@ func (g *GormSelectQuery) JoinRelation(relation string, apply ...func(common.Sel
 
 		wrapper := &GormSelectQuery{
 			db:             db,
+			reconnect:      g.reconnect,
 			driverName:     g.driverName,
 			inJoinContext:  true,                      // Mark as JOIN context
 			joinTableAlias: strings.ToLower(relation), // Use relation name as alias
@@ -444,7 +550,15 @@ func (g *GormSelectQuery) Scan(ctx context.Context, dest interface{}) (err error
 			err = logger.HandlePanic("GormSelectQuery.Scan", r)
 		}
 	}()
-	err = g.db.WithContext(ctx).Find(dest).Error
+	run := func() error {
+		return g.db.WithContext(ctx).Find(dest).Error
+	}
+	err = run()
+	if isDBClosed(err) && g.reconnect != nil {
+		if reconnErr := g.reconnect(g.db); reconnErr == nil {
+			err = run()
+		}
+	}
 	if err != nil {
 		// Log SQL string for debugging
 		sqlStr := g.db.ToSQL(func(tx *gorm.DB) *gorm.DB {
@@ -464,7 +578,15 @@ func (g *GormSelectQuery) ScanModel(ctx context.Context) (err error) {
 	if g.db.Statement.Model == nil {
 		return fmt.Errorf("ScanModel requires Model() to be set before scanning")
 	}
-	err = g.db.WithContext(ctx).Find(g.db.Statement.Model).Error
+	run := func() error {
+		return g.db.WithContext(ctx).Find(g.db.Statement.Model).Error
+	}
+	err = run()
+	if isDBClosed(err) && g.reconnect != nil {
+		if reconnErr := g.reconnect(g.db); reconnErr == nil {
+			err = run()
+		}
+	}
 	if err != nil {
 		// Log SQL string for debugging
 		sqlStr := g.db.ToSQL(func(tx *gorm.DB) *gorm.DB {
@@ -483,7 +605,15 @@ func (g *GormSelectQuery) Count(ctx context.Context) (count int, err error) {
 		}
 	}()
 	var count64 int64
-	err = g.db.WithContext(ctx).Count(&count64).Error
+	run := func() error {
+		return g.db.WithContext(ctx).Count(&count64).Error
+	}
+	err = run()
+	if isDBClosed(err) && g.reconnect != nil {
+		if reconnErr := g.reconnect(g.db); reconnErr == nil {
+			err = run()
+		}
+	}
 	if err != nil {
 		// Log SQL string for debugging
 		sqlStr := g.db.ToSQL(func(tx *gorm.DB) *gorm.DB {
@@ -502,7 +632,15 @@ func (g *GormSelectQuery) Exists(ctx context.Context) (exists bool, err error) {
 		}
 	}()
 	var count int64
-	err = g.db.WithContext(ctx).Limit(1).Count(&count).Error
+	run := func() error {
+		return g.db.WithContext(ctx).Limit(1).Count(&count).Error
+	}
+	err = run()
+	if isDBClosed(err) && g.reconnect != nil {
+		if reconnErr := g.reconnect(g.db); reconnErr == nil {
+			err = run()
+		}
+	}
 	if err != nil {
 		// Log SQL string for debugging
 		sqlStr := g.db.ToSQL(func(tx *gorm.DB) *gorm.DB {
@@ -515,9 +653,10 @@ func (g *GormSelectQuery) Exists(ctx context.Context) (exists bool, err error) {
 
 // GormInsertQuery implements InsertQuery for GORM
 type GormInsertQuery struct {
-	db     *gorm.DB
-	model  interface{}
-	values map[string]interface{}
+	db        *gorm.DB
+	reconnect func(...*gorm.DB) error
+	model     interface{}
+	values    map[string]interface{}
 }
 
 func (g *GormInsertQuery) Model(model interface{}) common.InsertQuery {
@@ -555,23 +694,31 @@ func (g *GormInsertQuery) Exec(ctx context.Context) (res common.Result, err erro
 			err = logger.HandlePanic("GormInsertQuery.Exec", r)
 		}
 	}()
-	var result *gorm.DB
-	switch {
-	case g.model != nil:
-		result = g.db.WithContext(ctx).Create(g.model)
-	case g.values != nil:
-		result = g.db.WithContext(ctx).Create(g.values)
-	default:
-		result = g.db.WithContext(ctx).Create(map[string]interface{}{})
+	run := func() *gorm.DB {
+		switch {
+		case g.model != nil:
+			return g.db.WithContext(ctx).Create(g.model)
+		case g.values != nil:
+			return g.db.WithContext(ctx).Create(g.values)
+		default:
+			return g.db.WithContext(ctx).Create(map[string]interface{}{})
+		}
+	}
+	result := run()
+	if isDBClosed(result.Error) && g.reconnect != nil {
+		if reconnErr := g.reconnect(g.db); reconnErr == nil {
+			result = run()
+		}
 	}
 	return &GormResult{result: result}, result.Error
 }
 
 // GormUpdateQuery implements UpdateQuery for GORM
 type GormUpdateQuery struct {
-	db      *gorm.DB
-	model   interface{}
-	updates interface{}
+	db        *gorm.DB
+	reconnect func(...*gorm.DB) error
+	model     interface{}
+	updates   interface{}
 }
 
 func (g *GormUpdateQuery) Model(model interface{}) common.UpdateQuery {
@@ -647,7 +794,15 @@ func (g *GormUpdateQuery) Exec(ctx context.Context) (res common.Result, err erro
 			err = logger.HandlePanic("GormUpdateQuery.Exec", r)
 		}
 	}()
-	result := g.db.WithContext(ctx).Updates(g.updates)
+	run := func() *gorm.DB {
+		return g.db.WithContext(ctx).Updates(g.updates)
+	}
+	result := run()
+	if isDBClosed(result.Error) && g.reconnect != nil {
+		if reconnErr := g.reconnect(g.db); reconnErr == nil {
+			result = run()
+		}
+	}
 	if result.Error != nil {
 		// Log SQL string for debugging
 		sqlStr := g.db.ToSQL(func(tx *gorm.DB) *gorm.DB {
@@ -660,8 +815,9 @@ func (g *GormUpdateQuery) Exec(ctx context.Context) (res common.Result, err erro
 
 // GormDeleteQuery implements DeleteQuery for GORM
 type GormDeleteQuery struct {
-	db    *gorm.DB
-	model interface{}
+	db        *gorm.DB
+	reconnect func(...*gorm.DB) error
+	model     interface{}
 }
 
 func (g *GormDeleteQuery) Model(model interface{}) common.DeleteQuery {
@@ -686,7 +842,15 @@ func (g *GormDeleteQuery) Exec(ctx context.Context) (res common.Result, err erro
 			err = logger.HandlePanic("GormDeleteQuery.Exec", r)
 		}
 	}()
-	result := g.db.WithContext(ctx).Delete(g.model)
+	run := func() *gorm.DB {
+		return g.db.WithContext(ctx).Delete(g.model)
+	}
+	result := run()
+	if isDBClosed(result.Error) && g.reconnect != nil {
+		if reconnErr := g.reconnect(g.db); reconnErr == nil {
+			result = run()
+		}
+	}
 	if result.Error != nil {
 		// Log SQL string for debugging
 		sqlStr := g.db.ToSQL(func(tx *gorm.DB) *gorm.DB {

pkg/dbmanager/connection.go

@@ -359,6 +359,42 @@ func (c *sqlConnection) Stats() *ConnectionStats {
 	return stats
 }
 
+func (c *sqlConnection) reconnectForAdapter() error {
+	timeout := c.config.ConnectTimeout
+	if timeout <= 0 {
+		timeout = 10 * time.Second
+	}
+
+	ctx, cancel := context.WithTimeout(context.Background(), timeout)
+	defer cancel()
+
+	return c.Reconnect(ctx)
+}
+
+func (c *sqlConnection) reopenNativeForAdapter() (*sql.DB, error) {
+	if err := c.reconnectForAdapter(); err != nil {
+		return nil, err
+	}
+
+	return c.Native()
+}
+
+func (c *sqlConnection) reopenBunForAdapter() (*bun.DB, error) {
+	if err := c.reconnectForAdapter(); err != nil {
+		return nil, err
+	}
+
+	return c.Bun()
+}
+
+func (c *sqlConnection) reopenGORMForAdapter() (*gorm.DB, error) {
+	if err := c.reconnectForAdapter(); err != nil {
+		return nil, err
+	}
+
+	return c.GORM()
+}
+
 // getBunAdapter returns or creates the Bun adapter
 func (c *sqlConnection) getBunAdapter() (common.Database, error) {
 	if c == nil {
@@ -391,7 +427,7 @@ func (c *sqlConnection) getBunAdapter() (common.Database, error) {
 		c.bunDB = bun.NewDB(native, dialect)
 	}
 
-	c.bunAdapter = database.NewBunAdapter(c.bunDB)
+	c.bunAdapter = database.NewBunAdapter(c.bunDB).WithDBFactory(c.reopenBunForAdapter)
 	return c.bunAdapter, nil
 }
 
@@ -432,7 +468,7 @@ func (c *sqlConnection) getGORMAdapter() (common.Database, error) {
 		c.gormDB = db
 	}
 
-	c.gormAdapter = database.NewGormAdapter(c.gormDB)
+	c.gormAdapter = database.NewGormAdapter(c.gormDB).WithDBFactory(c.reopenGORMForAdapter)
 	return c.gormAdapter, nil
 }
 
@@ -473,11 +509,11 @@ func (c *sqlConnection) getNativeAdapter() (common.Database, error) {
 	// Create a native adapter based on database type
 	switch c.dbType {
 	case DatabaseTypePostgreSQL:
-		c.nativeAdapter = database.NewPgSQLAdapter(c.nativeDB, string(c.dbType))
+		c.nativeAdapter = database.NewPgSQLAdapter(c.nativeDB, string(c.dbType)).WithDBFactory(c.reopenNativeForAdapter)
 	case DatabaseTypeSQLite:
-		c.nativeAdapter = database.NewPgSQLAdapter(c.nativeDB, string(c.dbType))
+		c.nativeAdapter = database.NewPgSQLAdapter(c.nativeDB, string(c.dbType)).WithDBFactory(c.reopenNativeForAdapter)
 	case DatabaseTypeMSSQL:
-		c.nativeAdapter = database.NewPgSQLAdapter(c.nativeDB, string(c.dbType))
+		c.nativeAdapter = database.NewPgSQLAdapter(c.nativeDB, string(c.dbType)).WithDBFactory(c.reopenNativeForAdapter)
 	default:
 		return nil, ErrUnsupportedDatabase
 	}

pkg/dbmanager/factory_test.go

@@ -4,8 +4,13 @@ import (
 	"context"
 	"database/sql"
 	"testing"
+	"time"
 
 	_ "github.com/mattn/go-sqlite3"
+	"gorm.io/gorm"
+
+	"github.com/bitechdev/ResolveSpec/pkg/common/adapters/database"
+	"github.com/bitechdev/ResolveSpec/pkg/dbmanager/providers"
 )
 
 func TestNewConnectionFromDB(t *testing.T) {
@@ -208,3 +213,157 @@ func TestNewConnectionFromDB_PostgreSQL(t *testing.T) {
 		t.Errorf("Expected type DatabaseTypePostgreSQL, got '%s'", conn.Type())
 	}
 }
+
+func TestDatabaseNativeAdapterReconnectFactory(t *testing.T) {
+	conn := newSQLConnection("test-native", DatabaseTypeSQLite, ConnectionConfig{
+		Name:           "test-native",
+		Type:           DatabaseTypeSQLite,
+		FilePath:       ":memory:",
+		DefaultORM:     string(ORMTypeNative),
+		ConnectTimeout: 2 * time.Second,
+	}, providers.NewSQLiteProvider())
+
+	ctx := context.Background()
+	if err := conn.Connect(ctx); err != nil {
+		t.Fatalf("Failed to connect: %v", err)
+	}
+	defer conn.Close()
+
+	db, err := conn.Database()
+	if err != nil {
+		t.Fatalf("Failed to get database adapter: %v", err)
+	}
+
+	adapter, ok := db.(*database.PgSQLAdapter)
+	if !ok {
+		t.Fatalf("Expected PgSQLAdapter, got %T", db)
+	}
+
+	underlyingBefore, ok := adapter.GetUnderlyingDB().(*sql.DB)
+	if !ok {
+		t.Fatalf("Expected underlying *sql.DB, got %T", adapter.GetUnderlyingDB())
+	}
+
+	if err := underlyingBefore.Close(); err != nil {
+		t.Fatalf("Failed to close underlying database: %v", err)
+	}
+
+	if _, err := db.Exec(ctx, "SELECT 1"); err != nil {
+		t.Fatalf("Expected native adapter to reconnect, got error: %v", err)
+	}
+
+	underlyingAfter, ok := adapter.GetUnderlyingDB().(*sql.DB)
+	if !ok {
+		t.Fatalf("Expected reconnected *sql.DB, got %T", adapter.GetUnderlyingDB())
+	}
+
+	if underlyingAfter == underlyingBefore {
+		t.Fatal("Expected adapter to swap to a fresh *sql.DB after reconnect")
+	}
+}
+
+func TestDatabaseBunAdapterReconnectFactory(t *testing.T) {
+	conn := newSQLConnection("test-bun", DatabaseTypeSQLite, ConnectionConfig{
+		Name:           "test-bun",
+		Type:           DatabaseTypeSQLite,
+		FilePath:       ":memory:",
+		DefaultORM:     string(ORMTypeBun),
+		ConnectTimeout: 2 * time.Second,
+	}, providers.NewSQLiteProvider())
+
+	ctx := context.Background()
+	if err := conn.Connect(ctx); err != nil {
+		t.Fatalf("Failed to connect: %v", err)
+	}
+	defer conn.Close()
+
+	db, err := conn.Database()
+	if err != nil {
+		t.Fatalf("Failed to get database adapter: %v", err)
+	}
+
+	adapter, ok := db.(*database.BunAdapter)
+	if !ok {
+		t.Fatalf("Expected BunAdapter, got %T", db)
+	}
+
+	underlyingBefore, ok := adapter.GetUnderlyingDB().(interface{ Close() error })
+	if !ok {
+		t.Fatalf("Expected underlying Bun DB with Close method, got %T", adapter.GetUnderlyingDB())
+	}
+
+	if err := underlyingBefore.Close(); err != nil {
+		t.Fatalf("Failed to close underlying Bun database: %v", err)
+	}
+
+	if _, err := db.Exec(ctx, "SELECT 1"); err != nil {
+		t.Fatalf("Expected Bun adapter to reconnect, got error: %v", err)
+	}
+
+	underlyingAfter := adapter.GetUnderlyingDB()
+	if underlyingAfter == underlyingBefore {
+		t.Fatal("Expected adapter to swap to a fresh Bun DB after reconnect")
+	}
+}
+
+func TestDatabaseGormAdapterReconnectFactory(t *testing.T) {
+	conn := newSQLConnection("test-gorm", DatabaseTypeSQLite, ConnectionConfig{
+		Name:           "test-gorm",
+		Type:           DatabaseTypeSQLite,
+		FilePath:       ":memory:",
+		DefaultORM:     string(ORMTypeGORM),
+		ConnectTimeout: 2 * time.Second,
+	}, providers.NewSQLiteProvider())
+
+	ctx := context.Background()
+	if err := conn.Connect(ctx); err != nil {
+		t.Fatalf("Failed to connect: %v", err)
+	}
+	defer conn.Close()
+
+	db, err := conn.Database()
+	if err != nil {
+		t.Fatalf("Failed to get database adapter: %v", err)
+	}
+
+	adapter, ok := db.(*database.GormAdapter)
+	if !ok {
+		t.Fatalf("Expected GormAdapter, got %T", db)
+	}
+
+	gormBefore, ok := adapter.GetUnderlyingDB().(*gorm.DB)
+	if !ok {
+		t.Fatalf("Expected underlying *gorm.DB, got %T", adapter.GetUnderlyingDB())
+	}
+
+	sqlBefore, err := gormBefore.DB()
+	if err != nil {
+		t.Fatalf("Failed to get underlying *sql.DB: %v", err)
+	}
+
+	if err := sqlBefore.Close(); err != nil {
+		t.Fatalf("Failed to close underlying database: %v", err)
+	}
+
+	count, err := db.NewSelect().Table("sqlite_master").Count(ctx)
+	if err != nil {
+		t.Fatalf("Expected GORM query builder to reconnect, got error: %v", err)
+	}
+	if count < 0 {
+		t.Fatalf("Expected non-negative count, got %d", count)
+	}
+
+	gormAfter, ok := adapter.GetUnderlyingDB().(*gorm.DB)
+	if !ok {
+		t.Fatalf("Expected reconnected *gorm.DB, got %T", adapter.GetUnderlyingDB())
+	}
+
+	sqlAfter, err := gormAfter.DB()
+	if err != nil {
+		t.Fatalf("Failed to get reconnected *sql.DB: %v", err)
+	}
+
+	if sqlAfter == sqlBefore {
+		t.Fatal("Expected GORM adapter to use a fresh *sql.DB after reconnect")
+	}
+}

pkg/dbmanager/manager.go

@@ -2,7 +2,9 @@ package dbmanager
 
 import (
 	"context"
+	"errors"
 	"fmt"
+	"strings"
 	"sync"
 	"time"
 
@@ -366,8 +368,11 @@ func (m *connectionManager) performHealthCheck() {
 				"connection", item.name,
 				"error", err)
 
-			// Attempt reconnection if enabled
-			if m.config.EnableAutoReconnect {
+			// Only reconnect when the client handle itself is closed/disconnected.
+			// For transient database restarts or network blips, *sql.DB can recover
+			// on its own; forcing Close()+Connect() here invalidates any cached ORM
+			// wrappers and callers that still hold the old handle.
+			if m.config.EnableAutoReconnect && shouldReconnectAfterHealthCheck(err) {
 				logger.Info("Attempting reconnection: connection=%s", item.name)
 				if err := item.conn.Reconnect(ctx); err != nil {
 					logger.Error("Reconnection failed",
@@ -376,7 +381,21 @@ func (m *connectionManager) performHealthCheck() {
 				} else {
 					logger.Info("Reconnection successful: connection=%s", item.name)
 				}
+			} else if m.config.EnableAutoReconnect {
+				logger.Info("Skipping reconnect for transient health check failure: connection=%s", item.name)
 			}
 		}
 	}
 }
+
+func shouldReconnectAfterHealthCheck(err error) bool {
+	if err == nil {
+		return false
+	}
+
+	if errors.Is(err, ErrConnectionClosed) {
+		return true
+	}
+
+	return strings.Contains(err.Error(), "sql: database is closed")
+}

pkg/dbmanager/manager_test.go

@@ -3,12 +3,38 @@ package dbmanager
 import (
 	"context"
 	"database/sql"
+	"fmt"
 	"testing"
 	"time"
 
+	"github.com/uptrace/bun"
+	"go.mongodb.org/mongo-driver/mongo"
+	"gorm.io/gorm"
+
+	"github.com/bitechdev/ResolveSpec/pkg/common"
+
 	_ "github.com/mattn/go-sqlite3"
 )
 
+type healthCheckStubConnection struct {
+	healthErr      error
+	reconnectCalls int
+}
+
+func (c *healthCheckStubConnection) Name() string                               { return "stub" }
+func (c *healthCheckStubConnection) Type() DatabaseType                         { return DatabaseTypePostgreSQL }
+func (c *healthCheckStubConnection) Bun() (*bun.DB, error)                      { return nil, fmt.Errorf("not implemented") }
+func (c *healthCheckStubConnection) GORM() (*gorm.DB, error)                    { return nil, fmt.Errorf("not implemented") }
+func (c *healthCheckStubConnection) Native() (*sql.DB, error)                   { return nil, fmt.Errorf("not implemented") }
+func (c *healthCheckStubConnection) DB() (*sql.DB, error)                       { return nil, fmt.Errorf("not implemented") }
+func (c *healthCheckStubConnection) Database() (common.Database, error)         { return nil, fmt.Errorf("not implemented") }
+func (c *healthCheckStubConnection) MongoDB() (*mongo.Client, error)            { return nil, fmt.Errorf("not implemented") }
+func (c *healthCheckStubConnection) Connect(ctx context.Context) error          { return nil }
+func (c *healthCheckStubConnection) Close() error                               { return nil }
+func (c *healthCheckStubConnection) HealthCheck(ctx context.Context) error      { return c.healthErr }
+func (c *healthCheckStubConnection) Reconnect(ctx context.Context) error        { c.reconnectCalls++; return nil }
+func (c *healthCheckStubConnection) Stats() *ConnectionStats                    { return &ConnectionStats{} }
+
 func TestBackgroundHealthChecker(t *testing.T) {
 	// Create a SQLite in-memory database
 	db, err := sql.Open("sqlite3", ":memory:")
@@ -224,3 +250,41 @@ func TestManagerStatsAfterClose(t *testing.T) {
 		t.Errorf("Expected 0 total connections after close, got %d", stats.TotalConnections)
 	}
 }
+
+func TestPerformHealthCheckSkipsReconnectForTransientFailures(t *testing.T) {
+	conn := &healthCheckStubConnection{
+		healthErr: fmt.Errorf("connection 'primary' health check: dial tcp 127.0.0.1:5432: connect: connection refused"),
+	}
+
+	mgr := &connectionManager{
+		connections: map[string]Connection{"primary": conn},
+		config: ManagerConfig{
+			EnableAutoReconnect: true,
+		},
+	}
+
+	mgr.performHealthCheck()
+
+	if conn.reconnectCalls != 0 {
+		t.Fatalf("expected no reconnect attempts for transient health failure, got %d", conn.reconnectCalls)
+	}
+}
+
+func TestPerformHealthCheckReconnectsClosedConnections(t *testing.T) {
+	conn := &healthCheckStubConnection{
+		healthErr: NewConnectionError("primary", "health check", fmt.Errorf("sql: database is closed")),
+	}
+
+	mgr := &connectionManager{
+		connections: map[string]Connection{"primary": conn},
+		config: ManagerConfig{
+			EnableAutoReconnect: true,
+		},
+	}
+
+	mgr.performHealthCheck()
+
+	if conn.reconnectCalls != 1 {
+		t.Fatalf("expected reconnect attempt for closed database handle, got %d", conn.reconnectCalls)
+	}
+}

pkg/security/providers.go

@@ -143,6 +143,22 @@ func (a *DatabaseAuthenticator) reconnectDB() error {
 	return nil
 }
 
+func (a *DatabaseAuthenticator) runDBOpWithReconnect(run func(*sql.DB) error) error {
+	db := a.getDB()
+	if db == nil {
+		return fmt.Errorf("database connection is nil")
+	}
+
+	err := run(db)
+	if isDBClosed(err) {
+		if reconnErr := a.reconnectDB(); reconnErr == nil {
+			err = run(a.getDB())
+		}
+	}
+
+	return err
+}
+
 func (a *DatabaseAuthenticator) Login(ctx context.Context, req LoginRequest) (*LoginResponse, error) {
 	// Convert LoginRequest to JSON
 	reqJSON, err := json.Marshal(req)
@@ -154,16 +170,10 @@ func (a *DatabaseAuthenticator) Login(ctx context.Context, req LoginRequest) (*L
 	var errorMsg sql.NullString
 	var dataJSON sql.NullString
 
-	runLoginQuery := func() error {
+	err = a.runDBOpWithReconnect(func(db *sql.DB) error {
 		query := fmt.Sprintf(`SELECT p_success, p_error, p_data::text FROM %s($1::jsonb)`, a.sqlNames.Login)
-		return a.getDB().QueryRowContext(ctx, query, string(reqJSON)).Scan(&success, &errorMsg, &dataJSON)
-	}
-	err = runLoginQuery()
-	if isDBClosed(err) {
-		if reconnErr := a.reconnectDB(); reconnErr == nil {
-			err = runLoginQuery()
-		}
-	}
+		return db.QueryRowContext(ctx, query, string(reqJSON)).Scan(&success, &errorMsg, &dataJSON)
+	})
 	if err != nil {
 		return nil, fmt.Errorf("login query failed: %w", err)
 	}
@@ -196,8 +206,10 @@ func (a *DatabaseAuthenticator) Register(ctx context.Context, req RegisterReques
 	var errorMsg sql.NullString
 	var dataJSON sql.NullString
 
-	query := fmt.Sprintf(`SELECT p_success, p_error, p_data::text FROM %s($1::jsonb)`, a.sqlNames.Register)
-	err = a.getDB().QueryRowContext(ctx, query, string(reqJSON)).Scan(&success, &errorMsg, &dataJSON)
+	err = a.runDBOpWithReconnect(func(db *sql.DB) error {
+		query := fmt.Sprintf(`SELECT p_success, p_error, p_data::text FROM %s($1::jsonb)`, a.sqlNames.Register)
+		return db.QueryRowContext(ctx, query, string(reqJSON)).Scan(&success, &errorMsg, &dataJSON)
+	})
 	if err != nil {
 		return nil, fmt.Errorf("register query failed: %w", err)
 	}
@@ -229,8 +241,10 @@ func (a *DatabaseAuthenticator) Logout(ctx context.Context, req LogoutRequest) e
 	var errorMsg sql.NullString
 	var dataJSON sql.NullString
 
-	query := fmt.Sprintf(`SELECT p_success, p_error, p_data::text FROM %s($1::jsonb)`, a.sqlNames.Logout)
-	err = a.getDB().QueryRowContext(ctx, query, string(reqJSON)).Scan(&success, &errorMsg, &dataJSON)
+	err = a.runDBOpWithReconnect(func(db *sql.DB) error {
+		query := fmt.Sprintf(`SELECT p_success, p_error, p_data::text FROM %s($1::jsonb)`, a.sqlNames.Logout)
+		return db.QueryRowContext(ctx, query, string(reqJSON)).Scan(&success, &errorMsg, &dataJSON)
+	})
 	if err != nil {
 		return fmt.Errorf("logout query failed: %w", err)
 	}
@@ -303,8 +317,10 @@ func (a *DatabaseAuthenticator) Authenticate(r *http.Request) (*UserContext, err
 			var errorMsg sql.NullString
 			var userJSON sql.NullString
 
-			query := fmt.Sprintf(`SELECT p_success, p_error, p_user::text FROM %s($1, $2)`, a.sqlNames.Session)
-			err := a.getDB().QueryRowContext(r.Context(), query, token, reference).Scan(&success, &errorMsg, &userJSON)
+			err := a.runDBOpWithReconnect(func(db *sql.DB) error {
+				query := fmt.Sprintf(`SELECT p_success, p_error, p_user::text FROM %s($1, $2)`, a.sqlNames.Session)
+				return db.QueryRowContext(r.Context(), query, token, reference).Scan(&success, &errorMsg, &userJSON)
+			})
 			if err != nil {
 				return nil, fmt.Errorf("session query failed: %w", err)
 			}
@@ -379,8 +395,10 @@ func (a *DatabaseAuthenticator) updateSessionActivity(ctx context.Context, sessi
 	var errorMsg sql.NullString
 	var updatedUserJSON sql.NullString
 
-	query := fmt.Sprintf(`SELECT p_success, p_error, p_user::text FROM %s($1, $2::jsonb)`, a.sqlNames.SessionUpdate)
-	_ = a.getDB().QueryRowContext(ctx, query, sessionToken, string(userJSON)).Scan(&success, &errorMsg, &updatedUserJSON)
+	_ = a.runDBOpWithReconnect(func(db *sql.DB) error {
+		query := fmt.Sprintf(`SELECT p_success, p_error, p_user::text FROM %s($1, $2::jsonb)`, a.sqlNames.SessionUpdate)
+		return db.QueryRowContext(ctx, query, sessionToken, string(userJSON)).Scan(&success, &errorMsg, &updatedUserJSON)
+	})
 }
 
 // RefreshToken implements Refreshable interface
@@ -390,8 +408,10 @@ func (a *DatabaseAuthenticator) RefreshToken(ctx context.Context, refreshToken s
 	var errorMsg sql.NullString
 	var userJSON sql.NullString
 	// Get current session to pass to refresh
-	query := fmt.Sprintf(`SELECT p_success, p_error, p_user::text FROM %s($1, $2)`, a.sqlNames.Session)
-	err := a.getDB().QueryRowContext(ctx, query, refreshToken, "refresh").Scan(&success, &errorMsg, &userJSON)
+	err := a.runDBOpWithReconnect(func(db *sql.DB) error {
+		query := fmt.Sprintf(`SELECT p_success, p_error, p_user::text FROM %s($1, $2)`, a.sqlNames.Session)
+		return db.QueryRowContext(ctx, query, refreshToken, "refresh").Scan(&success, &errorMsg, &userJSON)
+	})
 	if err != nil {
 		return nil, fmt.Errorf("refresh token query failed: %w", err)
 	}
@@ -407,8 +427,10 @@ func (a *DatabaseAuthenticator) RefreshToken(ctx context.Context, refreshToken s
 	var newErrorMsg sql.NullString
 	var newUserJSON sql.NullString
 
-	refreshQuery := fmt.Sprintf(`SELECT p_success, p_error, p_user::text FROM %s($1, $2::jsonb)`, a.sqlNames.RefreshToken)
-	err = a.getDB().QueryRowContext(ctx, refreshQuery, refreshToken, userJSON).Scan(&newSuccess, &newErrorMsg, &newUserJSON)
+	err = a.runDBOpWithReconnect(func(db *sql.DB) error {
+		refreshQuery := fmt.Sprintf(`SELECT p_success, p_error, p_user::text FROM %s($1, $2::jsonb)`, a.sqlNames.RefreshToken)
+		return db.QueryRowContext(ctx, refreshQuery, refreshToken, userJSON).Scan(&newSuccess, &newErrorMsg, &newUserJSON)
+	})
 	if err != nil {
 		return nil, fmt.Errorf("refresh token generation failed: %w", err)
 	}

pkg/security/providers_test.go

@@ -3,6 +3,7 @@ package security
 import (
 	"context"
 	"database/sql"
+	"fmt"
 	"net/http"
 	"net/http/httptest"
 	"testing"
@@ -790,6 +791,211 @@ func TestDatabaseAuthenticatorRefreshToken(t *testing.T) {
 	})
 }
 
+func TestDatabaseAuthenticatorReconnectsClosedDBPaths(t *testing.T) {
+	newAuthWithReconnect := func(t *testing.T) (*DatabaseAuthenticator, sqlmock.Sqlmock, sqlmock.Sqlmock, func()) {
+		t.Helper()
+
+		primaryDB, primaryMock, err := sqlmock.New()
+		if err != nil {
+			t.Fatalf("failed to create primary mock db: %v", err)
+		}
+
+		reconnectDB, reconnectMock, err := sqlmock.New()
+		if err != nil {
+			primaryDB.Close()
+			t.Fatalf("failed to create reconnect mock db: %v", err)
+		}
+
+		cacheProvider := cache.NewMemoryProvider(&cache.Options{
+			DefaultTTL: 1 * time.Minute,
+			MaxSize:    1000,
+		})
+
+		auth := NewDatabaseAuthenticatorWithOptions(primaryDB, DatabaseAuthenticatorOptions{
+			Cache: cache.NewCache(cacheProvider),
+			DBFactory: func() (*sql.DB, error) {
+				return reconnectDB, nil
+			},
+		})
+
+		cleanup := func() {
+			_ = primaryDB.Close()
+			_ = reconnectDB.Close()
+		}
+
+		return auth, primaryMock, reconnectMock, cleanup
+	}
+
+	t.Run("Authenticate reconnects after closed database", func(t *testing.T) {
+		auth, primaryMock, reconnectMock, cleanup := newAuthWithReconnect(t)
+		defer cleanup()
+
+		req := httptest.NewRequest("GET", "/test", nil)
+		req.Header.Set("Authorization", "Bearer reconnect-auth-token")
+
+		primaryMock.ExpectQuery(`SELECT p_success, p_error, p_user::text FROM resolvespec_session`).
+			WithArgs("reconnect-auth-token", "authenticate").
+			WillReturnError(fmt.Errorf("sql: database is closed"))
+
+		reconnectRows := sqlmock.NewRows([]string{"p_success", "p_error", "p_user"}).
+			AddRow(true, nil, `{"user_id":7,"user_name":"reconnect-user","session_id":"reconnect-auth-token"}`)
+
+		reconnectMock.ExpectQuery(`SELECT p_success, p_error, p_user::text FROM resolvespec_session`).
+			WithArgs("reconnect-auth-token", "authenticate").
+			WillReturnRows(reconnectRows)
+
+		userCtx, err := auth.Authenticate(req)
+		if err != nil {
+			t.Fatalf("expected authenticate to reconnect, got %v", err)
+		}
+		if userCtx.UserID != 7 {
+			t.Fatalf("expected user ID 7, got %d", userCtx.UserID)
+		}
+
+		if err := primaryMock.ExpectationsWereMet(); err != nil {
+			t.Fatalf("primary db expectations not met: %v", err)
+		}
+		if err := reconnectMock.ExpectationsWereMet(); err != nil {
+			t.Fatalf("reconnect db expectations not met: %v", err)
+		}
+	})
+
+	t.Run("Register reconnects after closed database", func(t *testing.T) {
+		auth, primaryMock, reconnectMock, cleanup := newAuthWithReconnect(t)
+		defer cleanup()
+
+		req := RegisterRequest{
+			Username:  "reconnect-register",
+			Password:  "password123",
+			Email:     "reconnect@example.com",
+			UserLevel: 1,
+			Roles:     []string{"user"},
+		}
+
+		primaryMock.ExpectQuery(`SELECT p_success, p_error, p_data::text FROM resolvespec_register`).
+			WithArgs(sqlmock.AnyArg()).
+			WillReturnError(fmt.Errorf("sql: database is closed"))
+
+		reconnectRows := sqlmock.NewRows([]string{"p_success", "p_error", "p_data"}).
+			AddRow(true, nil, `{"token":"reconnected-register-token","user":{"user_id":8,"user_name":"reconnect-register"},"expires_in":86400}`)
+
+		reconnectMock.ExpectQuery(`SELECT p_success, p_error, p_data::text FROM resolvespec_register`).
+			WithArgs(sqlmock.AnyArg()).
+			WillReturnRows(reconnectRows)
+
+		resp, err := auth.Register(context.Background(), req)
+		if err != nil {
+			t.Fatalf("expected register to reconnect, got %v", err)
+		}
+		if resp.Token != "reconnected-register-token" {
+			t.Fatalf("expected refreshed token, got %s", resp.Token)
+		}
+
+		if err := primaryMock.ExpectationsWereMet(); err != nil {
+			t.Fatalf("primary db expectations not met: %v", err)
+		}
+		if err := reconnectMock.ExpectationsWereMet(); err != nil {
+			t.Fatalf("reconnect db expectations not met: %v", err)
+		}
+	})
+
+	t.Run("Logout reconnects after closed database", func(t *testing.T) {
+		auth, primaryMock, reconnectMock, cleanup := newAuthWithReconnect(t)
+		defer cleanup()
+
+		req := LogoutRequest{Token: "logout-reconnect-token", UserID: 9}
+
+		primaryMock.ExpectQuery(`SELECT p_success, p_error, p_data::text FROM resolvespec_logout`).
+			WithArgs(sqlmock.AnyArg()).
+			WillReturnError(fmt.Errorf("sql: database is closed"))
+
+		reconnectRows := sqlmock.NewRows([]string{"p_success", "p_error", "p_data"}).
+			AddRow(true, nil, nil)
+
+		reconnectMock.ExpectQuery(`SELECT p_success, p_error, p_data::text FROM resolvespec_logout`).
+			WithArgs(sqlmock.AnyArg()).
+			WillReturnRows(reconnectRows)
+
+		if err := auth.Logout(context.Background(), req); err != nil {
+			t.Fatalf("expected logout to reconnect, got %v", err)
+		}
+
+		if err := primaryMock.ExpectationsWereMet(); err != nil {
+			t.Fatalf("primary db expectations not met: %v", err)
+		}
+		if err := reconnectMock.ExpectationsWereMet(); err != nil {
+			t.Fatalf("reconnect db expectations not met: %v", err)
+		}
+	})
+
+	t.Run("RefreshToken reconnects after closed database", func(t *testing.T) {
+		auth, primaryMock, reconnectMock, cleanup := newAuthWithReconnect(t)
+		defer cleanup()
+
+		refreshToken := "refresh-reconnect-token"
+
+		primaryMock.ExpectQuery(`SELECT p_success, p_error, p_user::text FROM resolvespec_session`).
+			WithArgs(refreshToken, "refresh").
+			WillReturnError(fmt.Errorf("sql: database is closed"))
+
+		sessionRows := sqlmock.NewRows([]string{"p_success", "p_error", "p_user"}).
+			AddRow(true, nil, `{"user_id":10,"user_name":"refresh-user"}`)
+
+		reconnectMock.ExpectQuery(`SELECT p_success, p_error, p_user::text FROM resolvespec_session`).
+			WithArgs(refreshToken, "refresh").
+			WillReturnRows(sessionRows)
+
+		refreshRows := sqlmock.NewRows([]string{"p_success", "p_error", "p_user"}).
+			AddRow(true, nil, `{"user_id":10,"user_name":"refresh-user","session_id":"refreshed-token"}`)
+
+		reconnectMock.ExpectQuery(`SELECT p_success, p_error, p_user::text FROM resolvespec_refresh_token`).
+			WithArgs(refreshToken, sqlmock.AnyArg()).
+			WillReturnRows(refreshRows)
+
+		resp, err := auth.RefreshToken(context.Background(), refreshToken)
+		if err != nil {
+			t.Fatalf("expected refresh token to reconnect, got %v", err)
+		}
+		if resp.Token != "refreshed-token" {
+			t.Fatalf("expected refreshed-token, got %s", resp.Token)
+		}
+
+		if err := primaryMock.ExpectationsWereMet(); err != nil {
+			t.Fatalf("primary db expectations not met: %v", err)
+		}
+		if err := reconnectMock.ExpectationsWereMet(); err != nil {
+			t.Fatalf("reconnect db expectations not met: %v", err)
+		}
+	})
+
+	t.Run("updateSessionActivity reconnects after closed database", func(t *testing.T) {
+		auth, primaryMock, reconnectMock, cleanup := newAuthWithReconnect(t)
+		defer cleanup()
+
+		userCtx := &UserContext{UserID: 11, UserName: "activity-user", SessionID: "activity-token"}
+
+		primaryMock.ExpectQuery(`SELECT p_success, p_error, p_user::text FROM resolvespec_session_update`).
+			WithArgs("activity-token", sqlmock.AnyArg()).
+			WillReturnError(fmt.Errorf("sql: database is closed"))
+
+		reconnectRows := sqlmock.NewRows([]string{"p_success", "p_error", "p_user"}).
+			AddRow(true, nil, `{"user_id":11,"user_name":"activity-user","session_id":"activity-token"}`)
+
+		reconnectMock.ExpectQuery(`SELECT p_success, p_error, p_user::text FROM resolvespec_session_update`).
+			WithArgs("activity-token", sqlmock.AnyArg()).
+			WillReturnRows(reconnectRows)
+
+		auth.updateSessionActivity(context.Background(), "activity-token", userCtx)
+
+		if err := primaryMock.ExpectationsWereMet(); err != nil {
+			t.Fatalf("primary db expectations not met: %v", err)
+		}
+		if err := reconnectMock.ExpectationsWereMet(); err != nil {
+			t.Fatalf("reconnect db expectations not met: %v", err)
+		}
+	})
+}
+
 // Test JWTAuthenticator
 func TestJWTAuthenticator(t *testing.T) {
 	db, mock, err := sqlmock.New()