diff --git a/core/appeal/service.go b/core/appeal/service.go
index 2c9741e4..07d347b5 100644
--- a/core/appeal/service.go
+++ b/core/appeal/service.go
@@ -1489,9 +1489,14 @@ func (s *Service) GrantAccessToProvider(ctx context.Context, a *domain.Appeal, o
 		}
 	}
 
+	g := a.Grant
+	appealCopy := *a
+	appealCopy.Grant = nil
+	g.Appeal = &appealCopy
 	if err := s.providerService.GrantAccess(ctx, *a.Grant); err != nil {
 		return fmt.Errorf("granting access: %w", err)
 	}
+	g.Appeal = nil
 
 	return nil
 }
diff --git a/plugins/providers/maxcompute/config.go b/plugins/providers/maxcompute/config.go
index eb5a567a..c1d5f3f4 100644
--- a/plugins/providers/maxcompute/config.go
+++ b/plugins/providers/maxcompute/config.go
@@ -2,6 +2,7 @@ package maxcompute
 
 import (
 	"fmt"
+	"slices"
 
 	"github.com/goto/guardian/domain"
 	"github.com/goto/guardian/utils"
@@ -14,6 +15,8 @@ const (
 
 	resourceTypeProject = "project"
 	resourceTypeTable   = "table"
+
+	parameterRAMRoleKey = "ram_role"
 )
 
 var (
@@ -71,5 +74,12 @@ func (c *config) validate() error {
 		}
 	}
 
+	// validate parameters
+	for _, param := range c.Parameters {
+		if !slices.Contains([]string{parameterRAMRoleKey}, param.Key) {
+			return fmt.Errorf("parameter key %q is not supported", param.Key)
+		}
+	}
+
 	return nil
 }
diff --git a/plugins/providers/maxcompute/provider.go b/plugins/providers/maxcompute/provider.go
index 193963a7..440bf6f8 100644
--- a/plugins/providers/maxcompute/provider.go
+++ b/plugins/providers/maxcompute/provider.go
@@ -5,7 +5,6 @@ import (
 	"slices"
 	"strings"
 	"sync"
-	"time"
 
 	openapi "github.com/alibabacloud-go/darabonba-openapi/client"
 	openapiv2 "github.com/alibabacloud-go/darabonba-openapi/v2/client"
@@ -149,7 +148,8 @@ func (p *provider) GetResources(ctx context.Context, pc *domain.ProviderConfig)
 }
 
 func (p *provider) GrantAccess(ctx context.Context, pc *domain.ProviderConfig, g domain.Grant) error {
-	client, err := p.getOdpsClient(pc)
+	ramRole, _ := getParametersFromGrant[string](g, parameterRAMRoleKey)
+	client, err := p.getOdpsClient(pc, ramRole)
 	if err != nil {
 		return err
 	}
@@ -215,7 +215,8 @@ func (p *provider) GrantAccess(ctx context.Context, pc *domain.ProviderConfig, g
 }
 
 func (p *provider) RevokeAccess(ctx context.Context, pc *domain.ProviderConfig, g domain.Grant) error {
-	client, err := p.getOdpsClient(pc)
+	ramRole, _ := getParametersFromGrant[string](g, parameterRAMRoleKey)
+	client, err := p.getOdpsClient(pc, ramRole)
 	if err != nil {
 		return err
 	}
@@ -291,14 +292,14 @@ func (p *provider) getCreds(pc *domain.ProviderConfig) (*credentials, error) {
 	return creds, nil
 }
 
-func (p *provider) getClientConfig(providerURN string, creds *credentials) (*openapiv2.Config, error) {
+func getClientConfig(providerURN, accountID, accountSecret, regionID, assumeAsRAMRole string) (*openapiv2.Config, error) {
 	configV2 := &openapiv2.Config{
-		AccessKeyId:     &creds.AccessKeyID,
-		AccessKeySecret: &creds.AccessKeySecret,
-		Endpoint:        &[]string{fmt.Sprintf("maxcompute.%s.aliyuncs.com", creds.RegionID)}[0],
+		AccessKeyId:     &accountID,
+		AccessKeySecret: &accountSecret,
+		Endpoint:        &[]string{fmt.Sprintf("maxcompute.%s.aliyuncs.com", regionID)}[0],
 	}
-	if creds.RAMRole != "" {
-		stsEndpoint := fmt.Sprintf("sts.%s.aliyuncs.com", creds.RegionID)
+	if assumeAsRAMRole != "" {
+		stsEndpoint := fmt.Sprintf("sts.%s.aliyuncs.com", regionID)
 		configV1 := &openapi.Config{
 			AccessKeyId:     configV2.AccessKeyId,
 			AccessKeySecret: configV2.AccessKeySecret,
@@ -308,13 +309,12 @@ func (p *provider) getClientConfig(providerURN string, creds *credentials) (*ope
 		if err != nil {
 			return nil, fmt.Errorf("failed to initialize STS client: %w", err)
 		}
-		sessionName := fmt.Sprintf("%s-%s", providerURN, time.Now().Format("2001-01-02T15:04:05"))
 		res, err := stsClient.AssumeRole(&sts.AssumeRoleRequest{
-			RoleArn:         &creds.RAMRole,
-			RoleSessionName: &sessionName,
+			RoleArn:         &assumeAsRAMRole,
+			RoleSessionName: &providerURN,
 		})
 		if err != nil {
-			return nil, fmt.Errorf("failed to assume role %q: %w", creds.RAMRole, err)
+			return nil, fmt.Errorf("failed to assume role %q: %w", assumeAsRAMRole, err)
 		}
 		// TODO: handle refreshing token when the used one is expired
 
@@ -335,7 +335,7 @@ func (p *provider) getRestClient(pc *domain.ProviderConfig) (*maxcompute.Client,
 	if err != nil {
 		return nil, err
 	}
-	clientConfig, err := p.getClientConfig(pc.URN, creds)
+	clientConfig, err := getClientConfig(pc.URN, creds.AccessKeyID, creds.AccessKeySecret, creds.RegionID, creds.RAMRole)
 	if err != nil {
 		return nil, err
 	}
@@ -350,8 +350,13 @@ func (p *provider) getRestClient(pc *domain.ProviderConfig) (*maxcompute.Client,
 	return restClient, nil
 }
 
-func (p *provider) getOdpsClient(pc *domain.ProviderConfig) (*odps.Odps, error) {
-	if client, ok := p.odpsClients[pc.URN]; ok {
+func (p *provider) getOdpsClient(pc *domain.ProviderConfig, overrideRAMRole string) (*odps.Odps, error) {
+	usingRAMRole := overrideRAMRole != ""
+	if usingRAMRole {
+		if client, ok := p.odpsClients[overrideRAMRole]; ok {
+			return client, nil
+		}
+	} else if client, ok := p.odpsClients[pc.URN]; ok {
 		return client, nil
 	}
 
@@ -359,7 +364,12 @@ func (p *provider) getOdpsClient(pc *domain.ProviderConfig) (*odps.Odps, error)
 	if err != nil {
 		return nil, err
 	}
-	clientConfig, err := p.getClientConfig(pc.URN, creds)
+	ramRole := creds.RAMRole
+	if usingRAMRole {
+		ramRole = overrideRAMRole
+	}
+
+	clientConfig, err := getClientConfig(pc.URN, creds.AccessKeyID, creds.AccessKeySecret, creds.RegionID, ramRole)
 	if err != nil {
 		return nil, err
 	}
@@ -373,7 +383,17 @@ func (p *provider) getOdpsClient(pc *domain.ProviderConfig) (*odps.Odps, error)
 	client := odps.NewOdps(acc, endpoint)
 
 	p.mu.Lock()
-	p.odpsClients[pc.URN] = client
+	if usingRAMRole {
+		p.odpsClients[overrideRAMRole] = client
+	} else {
+		p.odpsClients[pc.URN] = client
+	}
 	p.mu.Unlock()
 	return client, nil
 }
+
+func getParametersFromGrant[T any](g domain.Grant, key string) (T, bool) {
+	appealParams, _ := g.Appeal.Details[domain.ReservedDetailsKeyProviderParameters].(map[string]any)
+	value, ok := appealParams[key].(T)
+	return value, ok
+}