diff --git a/apps/desktop/src/components/explain/ExplainPlanDiagram.vue b/apps/desktop/src/components/explain/ExplainPlanDiagram.vue
index 3bf4623a8b..87e47c8a83 100644
--- a/apps/desktop/src/components/explain/ExplainPlanDiagram.vue
+++ b/apps/desktop/src/components/explain/ExplainPlanDiagram.vue
@@ -4,6 +4,7 @@ import { useI18n } from "vue-i18n";
 import { ArrowDownWideNarrow, CircleHelp, GitMerge, KeyRound, Layers, ListTree, Maximize2, MonitorCheck, Pencil, Sigma, Split, Table2, ZoomIn, ZoomOut } from "@lucide/vue";
 import { Button } from "@/components/ui/button";
 import type { ExplainPlanNode } from "@/lib/diagram/explainPlan";
+import { formatExplainPlanDetails } from "@/lib/diagram/explainPlan";
 import type { PlanCanvasCategory, PlanCanvasNode } from "@/lib/diagram/planCanvas";
 import { buildPlanCanvas, edgeStrokeWidth, formatPlanRows, heatLevel, PLAN_CANVAS_GAP_X, PLAN_CANVAS_NODE_H, PLAN_CANVAS_NODE_W } from "@/lib/diagram/planCanvas";
 
@@ -110,7 +111,7 @@ interface DetailEntry {
 }
 
 const selectedDetails = computed<DetailEntry[]>(() =>
-  (selected.value?.node.details ?? [])
+  formatExplainPlanDetails(selected.value?.node, t("explain.estimatedTime"))
     .map((detail): DetailEntry => {
       const separatorIndex = detail.indexOf(":");
       if (separatorIndex === -1) return { value: detail.trim() };
diff --git a/apps/desktop/src/components/explain/ExplainPlanNodeTree.vue b/apps/desktop/src/components/explain/ExplainPlanNodeTree.vue
index 62e8dfb19b..3243e1f9f2 100644
--- a/apps/desktop/src/components/explain/ExplainPlanNodeTree.vue
+++ b/apps/desktop/src/components/explain/ExplainPlanNodeTree.vue
@@ -5,6 +5,7 @@ import { useI18n } from "vue-i18n";
 import { Button } from "@/components/ui/button";
 import { Popover, PopoverContent, PopoverTrigger } from "@/components/ui/popover";
 import type { ExplainPlanNode } from "@/lib/diagram/explainPlan";
+import { formatExplainPlanDetails } from "@/lib/diagram/explainPlan";
 
 const props = defineProps<{
   node: ExplainPlanNode;
@@ -20,7 +21,7 @@ interface ExplainPlanDetailEntry {
 }
 
 const detailEntries = computed<ExplainPlanDetailEntry[]>(() =>
-  props.node.details
+  formatExplainPlanDetails(props.node, t("explain.estimatedTime"))
     .map((detail): ExplainPlanDetailEntry => {
       const separatorIndex = detail.indexOf(":");
       if (separatorIndex === -1) return { value: detail.trim() };
diff --git a/apps/desktop/src/components/explain/ExplainPlanViewer.vue b/apps/desktop/src/components/explain/ExplainPlanViewer.vue
index b7558d6531..d11aca332c 100644
--- a/apps/desktop/src/components/explain/ExplainPlanViewer.vue
+++ b/apps/desktop/src/components/explain/ExplainPlanViewer.vue
@@ -3,7 +3,7 @@ import { computed, ref, watch } from "vue";
 import { useI18n } from "vue-i18n";
 import { AlertCircle, Braces, GitBranch, Table2, FileText, Workflow } from "@lucide/vue";
 import type { ParsedExplainPlan, ExplainPlanNode } from "@/lib/diagram/explainPlan";
-import { flattenExplainPlanNodes } from "@/lib/diagram/explainPlan";
+import { flattenExplainPlanNodes, formatExplainPlanDetails } from "@/lib/diagram/explainPlan";
 import { extractActualRows } from "@/lib/diagram/planCanvas";
 import { Button } from "@/components/ui/button";
 import type { QueryResult } from "@/types/database";
@@ -185,7 +185,7 @@ function tableCellText(value: unknown): string {
                 <td class="px-2 py-1.5 tabular-nums">{{ row.node.cost || "-" }}</td>
                 <td class="px-2 py-1.5 tabular-nums">{{ row.node.rows || "-" }}</td>
                 <td class="px-2 py-1.5 text-muted-foreground">
-                  {{ row.node.details.join("; ") || "-" }}
+                  {{ formatExplainPlanDetails(row.node, t("explain.estimatedTime")).join("; ") || "-" }}
                 </td>
               </tr>
             </tbody>
diff --git a/apps/desktop/src/components/explain/__tests__/ExplainPlanViewer.locale.spec.ts b/apps/desktop/src/components/explain/__tests__/ExplainPlanViewer.locale.spec.ts
new file mode 100644
index 0000000000..d59557bfb5
--- /dev/null
+++ b/apps/desktop/src/components/explain/__tests__/ExplainPlanViewer.locale.spec.ts
@@ -0,0 +1,61 @@
+// @vitest-environment happy-dom
+
+import { afterEach, describe, expect, it } from "vitest";
+import { createApp, nextTick, type App } from "vue";
+import { createI18n } from "vue-i18n";
+import en from "@/i18n/locales/en";
+import zhCN from "@/i18n/locales/zh-CN";
+import { parseExplainResult } from "@/lib/diagram/explainPlan";
+import ExplainPlanViewer from "@/components/explain/ExplainPlanViewer.vue";
+
+let app: App | undefined;
+
+afterEach(() => {
+  app?.unmount();
+  app = undefined;
+  document.body.innerHTML = "";
+});
+
+describe("OceanBase estimated time localization", () => {
+  it.each(["canvas", "tree", "summary"] as const)("updates the existing %s view when the locale changes", async (view) => {
+    const plan = parseExplainResult("oceanbase-oracle", {
+      columns: ["Query Plan"],
+      rows: [[JSON.stringify({ ID: 0, OPERATOR: "TABLE FULL SCAN", NAME: "EXAMPLE_TABLE", "EST.TIME(us)": 0, filter: "C1 > 4" })]],
+      affected_rows: 0,
+      execution_time_ms: 1,
+    });
+    const originalPlan = JSON.stringify(plan);
+    const i18n = createI18n({ legacy: false, locale: "en", messages: { en, "zh-CN": zhCN } });
+    const container = document.createElement("div");
+    document.body.append(container);
+    app = createApp(ExplainPlanViewer, { plan });
+    app.use(i18n);
+    app.mount(container);
+    await nextTick();
+
+    if (view !== "canvas") {
+      const label = en.explain[view];
+      const button = [...container.querySelectorAll("button")].find((item) => item.textContent?.trim() === label);
+      expect(button).toBeDefined();
+      button!.click();
+      await nextTick();
+    }
+
+    expect(container.textContent).toContain("Estimated time");
+    expect(container.textContent).toContain("0 µs");
+    expect(container.textContent).toContain("C1 > 4");
+
+    i18n.global.locale.value = "zh-CN";
+    await nextTick();
+    expect(container.textContent).toContain("预计耗时");
+    expect(container.textContent).not.toContain("Estimated time");
+    expect(container.textContent).toContain("0 µs");
+    expect(container.textContent).toContain("C1 > 4");
+
+    i18n.global.locale.value = "en";
+    await nextTick();
+    expect(container.textContent).toContain("Estimated time");
+    expect(container.textContent).not.toContain("预计耗时");
+    expect(JSON.stringify(plan)).toBe(originalPlan);
+  });
+});
diff --git a/apps/desktop/src/i18n/locales/az.ts b/apps/desktop/src/i18n/locales/az.ts
index 9f5deae7d9..f0f8c718f4 100644
--- a/apps/desktop/src/i18n/locales/az.ts
+++ b/apps/desktop/src/i18n/locales/az.ts
@@ -2568,6 +2568,7 @@ export default withEnglishFallback({
     apply: "Tətbiq et",
   },
   explain: {
+    estimatedTime: "Təxmini vaxt",
     title: "İcra planı",
     standardTable: "Cədvəl",
     tree: "Ağac",
diff --git a/apps/desktop/src/i18n/locales/en.ts b/apps/desktop/src/i18n/locales/en.ts
index ef52b094eb..66d14d28fe 100644
--- a/apps/desktop/src/i18n/locales/en.ts
+++ b/apps/desktop/src/i18n/locales/en.ts
@@ -2740,6 +2740,7 @@ export default {
     apply: "Apply",
   },
   explain: {
+    estimatedTime: "Estimated time",
     title: "Explain Plan",
     standardTable: "Table",
     tree: "Tree",
diff --git a/apps/desktop/src/i18n/locales/es.ts b/apps/desktop/src/i18n/locales/es.ts
index c75aca4268..e599455eb5 100644
--- a/apps/desktop/src/i18n/locales/es.ts
+++ b/apps/desktop/src/i18n/locales/es.ts
@@ -2640,6 +2640,7 @@ export default withEnglishFallback({
     apply: "Aplicar",
   },
   explain: {
+    estimatedTime: "Tiempo estimado",
     title: "Plan de ejecución",
     standardTable: "Tabla",
     tree: "Árbol",
diff --git a/apps/desktop/src/i18n/locales/it.ts b/apps/desktop/src/i18n/locales/it.ts
index 062e9b80ee..779913fc02 100644
--- a/apps/desktop/src/i18n/locales/it.ts
+++ b/apps/desktop/src/i18n/locales/it.ts
@@ -2637,6 +2637,7 @@ export default withEnglishFallback({
     apply: "Applica",
   },
   explain: {
+    estimatedTime: "Tempo stimato",
     title: "Piano di Spiegazione",
     standardTable: "Tabella",
     tree: "Albero",
diff --git a/apps/desktop/src/i18n/locales/ja.ts b/apps/desktop/src/i18n/locales/ja.ts
index 2bcd3a485c..f5bce378f2 100644
--- a/apps/desktop/src/i18n/locales/ja.ts
+++ b/apps/desktop/src/i18n/locales/ja.ts
@@ -2663,6 +2663,7 @@ export default withEnglishFallback({
     apply: "適用",
   },
   explain: {
+    estimatedTime: "推定時間",
     title: "実行計画",
     standardTable: "標準テーブル",
     tree: "ツリー",
diff --git a/apps/desktop/src/i18n/locales/ko.ts b/apps/desktop/src/i18n/locales/ko.ts
index f1998e3422..e7b3a9c63d 100644
--- a/apps/desktop/src/i18n/locales/ko.ts
+++ b/apps/desktop/src/i18n/locales/ko.ts
@@ -2546,6 +2546,7 @@ export default withEnglishFallback({
     apply: "적용",
   },
   explain: {
+    estimatedTime: "예상 시간",
     title: "실행 계획",
     standardTable: "표",
     tree: "트리",
diff --git a/apps/desktop/src/i18n/locales/pt-BR.ts b/apps/desktop/src/i18n/locales/pt-BR.ts
index 9eb14f8b50..97347f8e40 100644
--- a/apps/desktop/src/i18n/locales/pt-BR.ts
+++ b/apps/desktop/src/i18n/locales/pt-BR.ts
@@ -2639,6 +2639,7 @@ export default withEnglishFallback({
     apply: "Aplicar",
   },
   explain: {
+    estimatedTime: "Tempo estimado",
     title: "Plano de Execução",
     standardTable: "Tabela",
     tree: "Árvore",
diff --git a/apps/desktop/src/i18n/locales/tr.ts b/apps/desktop/src/i18n/locales/tr.ts
index aa0752cdd3..71ae8c8262 100644
--- a/apps/desktop/src/i18n/locales/tr.ts
+++ b/apps/desktop/src/i18n/locales/tr.ts
@@ -2546,6 +2546,7 @@ export default withEnglishFallback({
     apply: "Uygula",
   },
   explain: {
+    estimatedTime: "Tahmini süre",
     title: "Yürütme Planı",
     standardTable: "Tablo",
     tree: "Ağaç",
diff --git a/apps/desktop/src/i18n/locales/zh-CN.ts b/apps/desktop/src/i18n/locales/zh-CN.ts
index 0da13024fc..b068ccb97e 100644
--- a/apps/desktop/src/i18n/locales/zh-CN.ts
+++ b/apps/desktop/src/i18n/locales/zh-CN.ts
@@ -2652,6 +2652,7 @@ export default withEnglishFallback({
     apply: "应用",
   },
   explain: {
+    estimatedTime: "预计耗时",
     title: "执行计划",
     standardTable: "标准表格",
     tree: "树",
diff --git a/apps/desktop/src/i18n/locales/zh-TW.ts b/apps/desktop/src/i18n/locales/zh-TW.ts
index 0b7577a9ea..517191eb21 100644
--- a/apps/desktop/src/i18n/locales/zh-TW.ts
+++ b/apps/desktop/src/i18n/locales/zh-TW.ts
@@ -2637,6 +2637,7 @@ export default withEnglishFallback({
     apply: "套用",
   },
   explain: {
+    estimatedTime: "預估耗時",
     title: "執行計畫",
     standardTable: "標準表格",
     tree: "樹狀",
diff --git a/apps/desktop/src/lib/__tests__/query/oceanbaseOracleExplainPlan.spec.ts b/apps/desktop/src/lib/__tests__/query/oceanbaseOracleExplainPlan.spec.ts
index d2fef97f03..347c867dff 100644
--- a/apps/desktop/src/lib/__tests__/query/oceanbaseOracleExplainPlan.spec.ts
+++ b/apps/desktop/src/lib/__tests__/query/oceanbaseOracleExplainPlan.spec.ts
@@ -37,7 +37,7 @@ describe("OceanBase Oracle explain plan", () => {
     expect(plan.raw).toEqual(JSON_PLAN);
     expect(nodes.map((node) => node.id)).toEqual(["0", "1", "3", "2"]);
     expect(nodes.map((node) => node.title)).toEqual(["HASH JOIN", "SUBPLAN SCAN on T1", "EXPRESSION", "TABLE FULL SCAN on T2"]);
-    expect(nodes[0]).toMatchObject({ rows: "1", details: ["Estimated time: 5 µs", "output: output([T1.C1], [T2.C1])"] });
+    expect(nodes[0]).toMatchObject({ rows: "1", estimatedTimeUs: "5", details: ["output: output([T1.C1], [T2.C1])"] });
     expect(nodes[1]).toMatchObject({ relation: "T1", rows: "2" });
     expect(nodes[3].details).toContain("filter: filter([T2.C1 > 4])");
     expect(nodes[0].cost).toBeUndefined();
@@ -50,4 +50,24 @@ describe("OceanBase Oracle explain plan", () => {
       nodes: [],
     });
   });
+
+  it("preserves zero estimates and sorts numbered children without exposing structural fields", () => {
+    const plan = parseExplainResult(
+      "oceanbase-oracle",
+      explainResult(
+        JSON.stringify({
+          ID: 0,
+          OPERATOR: "HASH JOIN",
+          "EST.TIME(us)": 0,
+          COST: 7,
+          CHILD_10: { ID: 10, OPERATOR: "TABLE FULL SCAN", "EST.TIME(us)": null },
+          CHILD_2: { ID: 2, OPERATOR: "TABLE FULL SCAN", filter: "C1 > 4" },
+        }),
+      ),
+    );
+    expect(plan.nodes[0]).toMatchObject({ estimatedTimeUs: "0", cost: "7", details: [] });
+    expect(plan.nodes[0].children.map((node) => node.id)).toEqual(["2", "10"]);
+    expect(plan.nodes[0].children[0]).toMatchObject({ estimatedTimeUs: undefined, details: ["filter: C1 > 4"] });
+    expect(plan.nodes[0].children[1]).toMatchObject({ estimatedTimeUs: undefined, details: [] });
+  });
 });
diff --git a/apps/desktop/src/lib/diagram/explainPlan.ts b/apps/desktop/src/lib/diagram/explainPlan.ts
index 4d1578a532..4599b25596 100644
--- a/apps/desktop/src/lib/diagram/explainPlan.ts
+++ b/apps/desktop/src/lib/diagram/explainPlan.ts
@@ -12,6 +12,7 @@ export interface ExplainPlanNode {
   cost?: string;
   rows?: string;
   width?: string;
+  estimatedTimeUs?: string;
   details: string[];
   children: ExplainPlanNode[];
 }
@@ -26,6 +27,11 @@ export interface ParsedExplainPlan {
 
 export type BuildExplainSqlResult = { ok: true; sql: string } | { ok: false; reason: "unsupported" | "empty" | "unsafe" };
 
+export function formatExplainPlanDetails(node: ExplainPlanNode | undefined, estimatedTimeLabel: string): string[] {
+  if (!node) return [];
+  return node.estimatedTimeUs === undefined ? node.details : [`${estimatedTimeLabel}: ${node.estimatedTimeUs} µs`, ...node.details];
+}
+
 const SUPPORTED_EXPLAIN_TYPES = new Set<DatabaseType>(["mysql", "postgres", "dameng", "questdb", "doris", "oracle", "oceanbase-oracle", "sqlserver"]);
 export function supportsExplainPlan(databaseType?: DatabaseType): databaseType is ExplainPlanDatabaseType {
   return !!databaseType && supportsDatabaseFeature(databaseType, "sqlExplain") && SUPPORTED_EXPLAIN_TYPES.has(databaseType);
@@ -598,25 +604,29 @@ function parseOceanbaseOracleExplain(result: QueryResult): ParsedExplainPlan {
   return { databaseType: "oceanbase-oracle", raw, nodes: root ? [parseOceanbaseOracleNode(root, "0")] : [] };
 }
 
+const OCEANBASE_PLAN_KEYS = { id: "ID", operator: "OPERATOR", name: "NAME", rows: "EST.ROWS", time: "EST.TIME(us)", cost: "COST" } as const;
+const OCEANBASE_PLAN_FIELDS = new Set<string>(Object.values(OCEANBASE_PLAN_KEYS));
+const OCEANBASE_CHILD_KEY = /^CHILD_\d+$/;
+
 function parseOceanbaseOracleNode(plan: Record<string, unknown>, fallbackId: string): ExplainPlanNode {
-  const nodeType = stringValue(plan.OPERATOR)?.trim() || "Plan";
-  const relation = stringValue(plan.NAME)?.trim() || undefined;
+  const nodeType = stringValue(plan[OCEANBASE_PLAN_KEYS.operator])?.trim() || "Plan";
+  const relation = stringValue(plan[OCEANBASE_PLAN_KEYS.name])?.trim() || undefined;
   const children = Object.entries(plan)
-    .filter(([key, value]) => /^CHILD_\d+$/.test(key) && objectValue(value))
+    .filter(([key, value]) => OCEANBASE_CHILD_KEY.test(key) && objectValue(value))
     .sort(([left], [right]) => Number(left.slice(6)) - Number(right.slice(6)))
     .map(([key, value]) => parseOceanbaseOracleNode(objectValue(value)!, `${fallbackId}.${key.slice(6)}`));
-  const estimatedTime = numberLike(plan["EST.TIME(us)"]);
+  const estimatedTimeUs = numberLike(plan[OCEANBASE_PLAN_KEYS.time]);
   const details = Object.entries(plan)
-    .filter(([key, value]) => !["ID", "OPERATOR", "NAME", "EST.ROWS", "EST.TIME(us)", "COST"].includes(key) && !/^CHILD_\d+$/.test(key) && value !== null)
+    .filter(([key, value]) => !OCEANBASE_PLAN_FIELDS.has(key) && !OCEANBASE_CHILD_KEY.test(key) && value !== null)
     .map(([key, value]) => `${key}: ${typeof value === "string" ? value : JSON.stringify(value)}`);
-  if (estimatedTime !== undefined) details.unshift(`Estimated time: ${estimatedTime} µs`);
   return {
-    id: numberLike(plan.ID) || fallbackId,
+    id: numberLike(plan[OCEANBASE_PLAN_KEYS.id]) || fallbackId,
     title: relation && relation !== nodeType ? `${nodeType} on ${relation}` : nodeType,
     nodeType,
     relation,
-    cost: numberLike(plan.COST),
-    rows: numberLike(plan["EST.ROWS"]),
+    cost: numberLike(plan[OCEANBASE_PLAN_KEYS.cost]),
+    rows: numberLike(plan[OCEANBASE_PLAN_KEYS.rows]),
+    estimatedTimeUs,
     details,
     children,
   };
diff --git a/apps/desktop/src/stores/__tests__/queryStore.oceanbaseOracleExplain.spec.ts b/apps/desktop/src/stores/__tests__/queryStore.oceanbaseOracleExplain.spec.ts
index 782b03a946..bb42b9c593 100644
--- a/apps/desktop/src/stores/__tests__/queryStore.oceanbaseOracleExplain.spec.ts
+++ b/apps/desktop/src/stores/__tests__/queryStore.oceanbaseOracleExplain.spec.ts
@@ -57,7 +57,7 @@ describe("queryStore OceanBase Oracle explain", () => {
       isExplaining: false,
       explainError: undefined,
       explainSql: "EXPLAIN FORMAT=JSON SELECT 1 FROM DUAL",
-      explainPlan: { databaseType: "oceanbase-oracle", nodes: [{ id: "0", nodeType: "EXPRESSION", rows: "1", details: ["Estimated time: 1 µs"] }] },
+      explainPlan: { databaseType: "oceanbase-oracle", nodes: [{ id: "0", nodeType: "EXPRESSION", rows: "1", estimatedTimeUs: "1", details: [] }] },
     });
   });
 });
diff --git a/crates/dbx-core/assets/docs-export.manifest.json b/crates/dbx-core/assets/docs-export.manifest.json
index b83e9f4324..ab250b6de6 100644
--- a/crates/dbx-core/assets/docs-export.manifest.json
+++ b/crates/dbx-core/assets/docs-export.manifest.json
@@ -38,7 +38,7 @@
     "apps/desktop/src/i18n/locales/docs/zh-TW.ts": "691cf502248dbd09358c6c276990945013b26c52fb682bcd56b26f378daea29c",
     "apps/desktop/src/lib/app/localeOptions.ts": "2c19ecb7c91050d5f1c84c381606087ada11870d3ee95029362f84f34de23239",
     "apps/desktop/src/lib/common/utils.ts": "76c4b2af1e03edeb8db389d9b2c1b56b72a57a1b5198d4e224671c1445c527da",
-    "apps/desktop/src/lib/diagram/erDiagram.ts": "e28aa2b5fbba001ae78bc0c4218b11f93b0e14ab9f54562f14254386b98bad11",
+    "apps/desktop/src/lib/diagram/erDiagram.ts": "c22416a9a5ec5e619acc2d8bc5451254a25abe29fc518e9fb4f611e076fe7b1f",
     "apps/desktop/src/styles/tokens.css": "5d0dd04cb28e5354a57ca7365418923aa912ee0cf28e1d0665734de04493c533",
     "apps/desktop/tsconfig.json": "ee02ba8f2f257b86235cd3053e8d6fbfefd7c39e0807b4ea5e36e133a78e836c",
     "apps/desktop/vite.docs-export.config.ts": "833bc2cbd99f9c0740cbc1584640458492bad75c9518db4d1ce0edd6958881ec"