diff --git a/mayfly_go_web/src/views/login/component/AccountLogin.vue b/mayfly_go_web/src/views/login/component/AccountLogin.vue
index 88de413a..234a71d6 100644
--- a/mayfly_go_web/src/views/login/component/AccountLogin.vue
+++ b/mayfly_go_web/src/views/login/component/AccountLogin.vue
@@ -405,9 +405,7 @@ const toIndex = async () => {
         // 关闭 loading
         state.loading.signIn = true;
         ElMessage.success(`${currentTimeInfo}，欢迎回来！`);
-        if (await useWartermark()) {
-            saveUseWatermark(true);
-        }
+        saveUseWatermark(await useWartermark());
     }, 300);
 };
 
diff --git a/mayfly_go_web/src/views/ops/db/SqlExec.vue b/mayfly_go_web/src/views/ops/db/SqlExec.vue
index 9c081043..4f773f8f 100644
--- a/mayfly_go_web/src/views/ops/db/SqlExec.vue
+++ b/mayfly_go_web/src/views/ops/db/SqlExec.vue
@@ -2,7 +2,12 @@
     <div>
         <el-row class="mb5">
             <el-col :span="4">
-                <el-button type="primary" icon="plus" @click="addQueryTab({ id: nowDbInst.id, dbs: nowDbInst.databases.split(' ') }, state.db)" size="small"
+                <el-button
+                    :disabled="!state.db || !nowDbInst.id"
+                    type="primary"
+                    icon="plus"
+                    @click="addQueryTab({ id: nowDbInst.id, dbs: nowDbInst.databases?.split(' ') }, state.db)"
+                    size="small"
                     >新建查询</el-button
                 >
             </el-col>
diff --git a/mayfly_go_web/vite.config.ts b/mayfly_go_web/vite.config.ts
index b026b42d..0138d5d4 100644
--- a/mayfly_go_web/vite.config.ts
+++ b/mayfly_go_web/vite.config.ts
@@ -29,7 +29,7 @@ const viteConfig: UserConfig = {
         open: VITE_OPEN,
         proxy: {
             '/api': {
-                target: 'http://localhost:8888',
+                target: 'http://localhost:18888',
                 ws: true,
                 changeOrigin: true,
             },
diff --git a/server/internal/db/application/db.go b/server/internal/db/application/db.go
index dc24f12e..c95a6956 100644
--- a/server/internal/db/application/db.go
+++ b/server/internal/db/application/db.go
@@ -76,42 +76,36 @@ func (d *dbAppImpl) GetById(id uint64, cols ...string) *entity.Db {
 }
 
 func (d *dbAppImpl) Save(dbEntity *entity.Db) {
-	// 查找是否存在该库
-	oldDb := &entity.Db{Name: dbEntity.Name}
+	// 查找是否存在
+	oldDb := &entity.Db{Name: dbEntity.Name, InstanceId: dbEntity.InstanceId}
 	err := d.GetDbBy(oldDb)
 
 	if dbEntity.Id == 0 {
-		biz.IsTrue(err != nil, "该数据库资源已存在")
+		biz.IsTrue(err != nil, "该实例下数据库名已存在")
 		d.dbRepo.Insert(dbEntity)
 		return
 	}
 
 	// 如果存在该库，则校验修改的库是否为该库
 	if err == nil {
-		biz.IsTrue(oldDb.Id == dbEntity.Id, "该数据库资源已存在")
+		biz.IsTrue(oldDb.Id == dbEntity.Id, "该实例下数据库名已存在")
 	}
 
 	dbId := dbEntity.Id
 	old := d.GetById(dbId)
 
-	var oldDbs []any
-	for _, v := range strings.Split(old.Database, " ") {
+	oldDbs := strings.Split(old.Database, " ")
+	newDbs := strings.Split(dbEntity.Database, " ")
+	// 比较新旧数据库列表，需要将移除的数据库相关联的信息删除
+	_, delDb, _ := collx.ArrayCompare(newDbs, oldDbs, func(i1, i2 string) bool {
+		return i1 == i2
+	})
+
+	for _, v := range delDb {
 		// 关闭数据库连接
 		CloseDb(dbEntity.Id, v)
-		oldDbs = append(oldDbs, v)
-	}
-
-	var newDbs []any
-	for _, v := range strings.Split(dbEntity.Database, " ") {
-		newDbs = append(newDbs, v)
-	}
-	// 比较新旧数据库列表，需要将移除的数据库相关联的信息删除
-	_, delDb, _ := collx.ArrayCompare(newDbs, oldDbs, func(i1, i2 any) bool {
-		return i1.(string) == i2.(string)
-	})
-	for _, v := range delDb {
 		// 删除该库关联的所有sql记录
-		d.dbSqlRepo.DeleteBy(&entity.DbSql{DbId: dbId, Db: v.(string)})
+		d.dbSqlRepo.DeleteBy(&entity.DbSql{DbId: dbId, Db: v})
 	}
 
 	d.dbRepo.Update(dbEntity)