diff --git a/src/main/ipc/validation-handler.ts b/src/main/ipc/validation-handler.ts
index 1e2bcca..6db04b5 100644
--- a/src/main/ipc/validation-handler.ts
+++ b/src/main/ipc/validation-handler.ts
@@ -162,37 +162,52 @@ async function getSourceNumbersFromInputs(
   // Column name: 生产订单号 (SourceNumber)
   if (productionIds.length > 0) {
     const contractTableName = getTableName('productionContractData_26年压力表合同数据')
+    const batchSize = 2000
 
     if (isSqlServer) {
       const sql = require('mssql')
-      const placeholders = productionIds.map((_, idx) => `@p${idx}`).join(',')
-      const params: Record<string, { value: string; type: any }> = {}
+      const allOrderNumbers: string[] = []
 
-      productionIds.forEach((id, idx) => {
-        params[`p${idx}`] = { value: id, type: sql.NVarChar }
-      })
+      for (let i = 0; i < productionIds.length; i += batchSize) {
+        const batch = productionIds.slice(i, i + batchSize)
+        const placeholders = batch.map((_, idx) => `@p${idx}`).join(',')
+        const params: Record<string, { value: string; type: any }> = {}
 
-      const contractSql = `
-        SELECT DISTINCT 生产订单号
-        FROM ${contractTableName}
-        WHERE 总排号 IN (${placeholders})
-      `
-      const contractResult = await (dbService as SqlServerService).queryWithParams(
-        contractSql,
-        params
-      )
-      const dbOrderNumbers = contractResult.rows.map((row) => row.生产订单号 as string)
-      orderNumbers.push(...dbOrderNumbers)
+        batch.forEach((id, idx) => {
+          params[`p${idx}`] = { value: id, type: sql.NVarChar }
+        })
+
+        const contractSql = `
+          SELECT DISTINCT 生产订单号
+          FROM ${contractTableName}
+          WHERE 总排号 IN (${placeholders})
+        `
+        const contractResult = await (dbService as SqlServerService).queryWithParams(
+          contractSql,
+          params
+        )
+        const dbOrderNumbers = contractResult.rows.map((row) => row.生产订单号 as string)
+        allOrderNumbers.push(...dbOrderNumbers)
+      }
+
+      orderNumbers.push(...allOrderNumbers)
     } else {
-      const placeholders = productionIds.map(() => '?').join(',')
-      const contractSql = `
-        SELECT DISTINCT 生产订单号
-        FROM ${contractTableName}
-        WHERE 总排号 IN (${placeholders})
-      `
-      const contractResult = await (dbService as MySqlService).query(contractSql, productionIds)
-      const dbOrderNumbers = contractResult.rows.map((row) => row.生产订单号 as string)
-      orderNumbers.push(...dbOrderNumbers)
+      const allOrderNumbers: string[] = []
+
+      for (let i = 0; i < productionIds.length; i += batchSize) {
+        const batch = productionIds.slice(i, i + batchSize)
+        const placeholders = batch.map(() => '?').join(',')
+        const contractSql = `
+          SELECT DISTINCT 生产订单号
+          FROM ${contractTableName}
+          WHERE 总排号 IN (${placeholders})
+        `
+        const contractResult = await (dbService as MySqlService).query(contractSql, batch)
+        const dbOrderNumbers = contractResult.rows.map((row) => row.生产订单号 as string)
+        allOrderNumbers.push(...dbOrderNumbers)
+      }
+
+      orderNumbers.push(...allOrderNumbers)
     }
   }
 
diff --git a/src/main/services/config/config-manager.ts b/src/main/services/config/config-manager.ts
index 71b8080..a52888e 100644
--- a/src/main/services/config/config-manager.ts
+++ b/src/main/services/config/config-manager.ts
@@ -313,7 +313,7 @@ export class ConfigManager {
       // Order number parsing table configuration
       lines.push('# 订单号解析表配置')
       lines.push('# 表名：包含 productionID 和 生产订单号 映射关系的表')
-      lines.push(`DB_TABLE_NAME=productionContractData_26 年压力表合同数据`)
+      lines.push(`DB_TABLE_NAME=productionContractData_26年压力表合同数据`)
       lines.push('# 字段名：总排号 (对应 productionID)')
       lines.push(`DB_FIELD_PRODUCTION_ID=总排号`)
       lines.push('# 字段名：生产订单号 (对应生产订单号)')
diff --git a/src/main/services/database/discrete-material-plan-dao.ts b/src/main/services/database/discrete-material-plan-dao.ts
index 6eb31ea..a093a8b 100644
--- a/src/main/services/database/discrete-material-plan-dao.ts
+++ b/src/main/services/database/discrete-material-plan-dao.ts
@@ -208,7 +208,7 @@ export class DiscreteMaterialPlanDAO {
       const dbService = await this.getDatabaseService()
       const tableName = this.getTableName()
       const isSqlServer = dbService.type === 'sqlserver'
-      const batchSize = 2000
+      const batchSize = 1500
       const allResults: any[] = []
 
       for (let i = 0; i < sourceNumbers.length; i += batchSize) {
@@ -250,7 +250,7 @@ export class DiscreteMaterialPlanDAO {
       const dbService = await this.getDatabaseService()
       const tableName = this.getTableName()
       const isSqlServer = dbService.type === 'sqlserver'
-      const batchSize = 2000
+      const batchSize = 1500
       const allResults: any[] = []
 
       for (let i = 0; i < sourceNumbers.length; i += batchSize) {
@@ -365,16 +365,24 @@ export class DiscreteMaterialPlanDAO {
       const dbService = await this.getDatabaseService()
       const tableName = this.getTableName()
       const isSqlServer = dbService.type === 'sqlserver'
-      const placeholders = this.buildPlaceholders(planNumbers.length, isSqlServer)
+      const batchSize = 1500
+      const allResults: any[] = []
 
-      const sqlString = `
-        SELECT *
-        FROM ${tableName}
-        WHERE PlanNumber IN (${placeholders})
-      `
+      for (let i = 0; i < planNumbers.length; i += batchSize) {
+        const batch = planNumbers.slice(i, i + batchSize)
+        const placeholders = this.buildPlaceholders(batch.length, isSqlServer)
 
-      const result = await dbService.query(sqlString, planNumbers)
-      return result.rows
+        const sqlString = `
+          SELECT *
+          FROM ${tableName}
+          WHERE PlanNumber IN (${placeholders})
+        `
+
+        const result = await dbService.query(sqlString, batch)
+        allResults.push(...result.rows)
+      }
+
+      return allResults
     } catch (error) {
       log.error('Query by plan numbers error', {
         error: error instanceof Error ? error.message : String(error)
@@ -703,17 +711,25 @@ export class DiscreteMaterialPlanDAO {
       const isSqlServer = dbService.type === 'sqlserver'
 
       if (sourceNumbers && sourceNumbers.length > 0) {
-        const placeholders = this.buildPlaceholders(sourceNumbers.length, isSqlServer)
+        const batchSize = 1500
+        const allNames: string[] = []
 
-        const sqlString = `
-          SELECT DISTINCT MaterialName
-          FROM ${tableName}
-          WHERE SourceNumber IN (${placeholders})
-            AND MaterialName IS NOT NULL
-        `
+        for (let i = 0; i < sourceNumbers.length; i += batchSize) {
+          const batch = sourceNumbers.slice(i, i + batchSize)
+          const placeholders = this.buildPlaceholders(batch.length, isSqlServer)
 
-        const result = await dbService.query(sqlString, sourceNumbers)
-        return result.rows.map((row) => row.MaterialName as string).filter(Boolean)
+          const sqlString = `
+            SELECT DISTINCT MaterialName
+            FROM ${tableName}
+            WHERE SourceNumber IN (${placeholders})
+              AND MaterialName IS NOT NULL
+          `
+
+          const result = await dbService.query(sqlString, batch)
+          allNames.push(...result.rows.map((row) => row.MaterialName as string).filter(Boolean))
+        }
+
+        return allNames
       } else {
         const sqlString = `
           SELECT DISTINCT MaterialName