diff --git a/src/main/java/com/yau/digitalrmb/issuance/application/service/IssuanceTrainingResetService.java b/src/main/java/com/yau/digitalrmb/issuance/application/service/IssuanceTrainingResetService.java
index ef96b0a..99c71b6 100644
--- a/src/main/java/com/yau/digitalrmb/issuance/application/service/IssuanceTrainingResetService.java
+++ b/src/main/java/com/yau/digitalrmb/issuance/application/service/IssuanceTrainingResetService.java
@@ -97,7 +97,8 @@ public class IssuanceTrainingResetService {
         Integer resettable = jdbc.queryForObject("SELECT COUNT(*) FROM commercial_bank_currency c "
                 + "JOIN central_bank_currency_ownership o ON o.currency_id=c.currency_id "
                 + "WHERE c.issuance_request_id=? AND c.status='可用' AND o.owner_type='BANK' "
-                + "AND o.owner_id=c.bank_code AND o.status='AVAILABLE' AND o.lock_business_type IS NULL "
+                + "AND CAST(o.owner_id AS BINARY)=CAST(c.bank_code AS BINARY) "
+                + "AND o.status='AVAILABLE' AND o.lock_business_type IS NULL "
                 + "AND o.lock_business_id IS NULL AND o.last_transaction_id IS NULL", Integer.class, requestId);
         if (!safeEquals(issued, resettable)) {
             throw validation("模块二发行的数字货币已被后续模块使用，不能从模块二重置");
diff --git a/src/main/resources/db/manual/issuance_cancel_reset_fix_upgrade.sql b/src/main/resources/db/manual/issuance_cancel_reset_fix_upgrade.sql
new file mode 100644
index 0000000..dc12c54
--- /dev/null
+++ b/src/main/resources/db/manual/issuance_cancel_reset_fix_upgrade.sql
@@ -0,0 +1,34 @@
+-- 修复模块二取消、重新实训接口依赖的线上数据库结构。
+-- 适用问题：
+-- 1. POST /api/v1/issuance/attempts/{attemptId}/cancel 返回 500；
+-- 2. POST /api/v1/issuance/training/reset 返回 500。
+-- 3. POST /api/v1/central-banks/issuance/requests/{id}/business-review 返回 500。
+
+CREATE TABLE IF NOT EXISTS issuance_source_currency_usage (
+    id BIGINT PRIMARY KEY,
+    source_currency_id BIGINT NOT NULL,
+    source_batch_id BIGINT NOT NULL,
+    issuance_request_id CHAR(36) NOT NULL,
+    status VARCHAR(16) NOT NULL,
+    reserved_at TIMESTAMP NOT NULL,
+    released_at TIMESTAMP NULL,
+    issued_at TIMESTAMP NULL,
+    audit_user_id VARCHAR(36) NOT NULL,
+    audit_username VARCHAR(64) NOT NULL,
+    created_at TIMESTAMP NOT NULL,
+    updated_at TIMESTAMP NOT NULL,
+    CONSTRAINT uk_issuance_source_currency UNIQUE (source_currency_id),
+    INDEX idx_issuance_source_request (issuance_request_id, status)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
+
+ALTER TABLE central_bank_currency_ownership
+    ADD COLUMN lock_business_type VARCHAR(32) NULL AFTER status,
+    ADD COLUMN lock_business_id VARCHAR(96) NULL AFTER lock_business_type,
+    ADD INDEX idx_currency_ownership_available (owner_type, owner_id, status),
+    ADD INDEX idx_currency_ownership_lock_business (lock_business_type, lock_business_id);
+
+-- commercial_bank_currency 来自较新的默认排序规则，而兑换权属相关表沿用
+-- utf8mb4_unicode_ci。统一关联键，避免 owner_id=bank_code 查询触发 collation 冲突。
+ALTER TABLE commercial_bank_currency
+    MODIFY COLUMN bank_code VARCHAR(32)
+        CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NOT NULL;