diff --git a/apps/desktop/src/lib/database/databaseCapabilitySets.ts b/apps/desktop/src/lib/database/databaseCapabilitySets.ts
index 8eb4441b5..1c1ddaf2e 100644
--- a/apps/desktop/src/lib/database/databaseCapabilitySets.ts
+++ b/apps/desktop/src/lib/database/databaseCapabilitySets.ts
@@ -39,7 +39,7 @@ export const SCHEMA_AWARE_TYPES = new Set<DatabaseType>([
 
 export const SINGLE_DATABASE_TYPES = new Set<DatabaseType>(["oracle", "dameng", "firebird", "oceanbase-oracle", "access", "questdb"]);
 
-export const CLEARABLE_QUERY_SCHEMA_TYPES = new Set<DatabaseType>(["oracle", "dameng", "oceanbase-oracle"]);
+export const CLEARABLE_QUERY_SCHEMA_TYPES = new Set<DatabaseType>(["oracle", "dameng", "gaussdb", "oceanbase-oracle"]);
 
 export const FETCH_FIRST_TYPES = new Set<DatabaseType>(["oracle", "dameng"]);
 
diff --git a/packages/app-tests/databaseCapabilities.test.ts b/packages/app-tests/databaseCapabilities.test.ts
index a9b429bdd..239b49439 100644
--- a/packages/app-tests/databaseCapabilities.test.ts
+++ b/packages/app-tests/databaseCapabilities.test.ts
@@ -33,12 +33,14 @@ test("visible schema menu capability preserves adjacent database families", () =
   assert.equal(canConfigureVisibleSchemasForTreeNode("mysql", "database", "app"), false);
 });
 
-test("only Oracle-compatible single-database schemas can be cleared from query tabs", () => {
+test("only explicitly supported query schemas can be cleared from query tabs", () => {
   assert.equal(supportsClearableQuerySchema("oracle"), true);
   assert.equal(supportsClearableQuerySchema("dameng"), true);
+  assert.equal(supportsClearableQuerySchema("gaussdb"), true);
   assert.equal(supportsClearableQuerySchema("oceanbase-oracle"), true);
   assert.equal(supportsClearableQuerySchema("mysql"), false);
   assert.equal(supportsClearableQuerySchema("postgres"), false);
+  assert.equal(supportsClearableQuerySchema("opengauss"), false);
   assert.equal(supportsClearableQuerySchema("sqlserver"), false);
   assert.equal(supportsClearableQuerySchema("jdbc"), false);
 });
diff --git a/packages/app-tests/queryStore.test.ts b/packages/app-tests/queryStore.test.ts
index f79773046..81f39be1f 100644
--- a/packages/app-tests/queryStore.test.ts
+++ b/packages/app-tests/queryStore.test.ts
@@ -49,9 +49,9 @@ function oracleConn(id: string): ConnectionConfig {
   };
 }
 
-function oracleCompatibleConn(id: string, dbType: "oracle" | "dameng" | "oceanbase-oracle"): ConnectionConfig {
+function clearableQuerySchemaConn(id: string, dbType: "oracle" | "dameng" | "gaussdb" | "oceanbase-oracle"): ConnectionConfig {
   return {
-    ...oracleConn(id),
+    ...conn(id),
     db_type: dbType,
   };
 }
@@ -4246,7 +4246,7 @@ test("closing a data tab releases its tab-scoped client session", async () => {
   }
 });
 
-for (const dbType of ["oracle", "dameng", "oceanbase-oracle"] as const) {
+for (const dbType of ["oracle", "dameng", "gaussdb", "oceanbase-oracle"] as const) {
   test(`clearing a ${dbType} query schema releases its tab-scoped client session`, async () => {
     const restoreStorage = installMemoryStorage();
     setActivePinia(createPinia());
@@ -4255,7 +4255,7 @@ for (const dbType of ["oracle", "dameng", "oceanbase-oracle"] as const) {
     const originalFetch = globalThis.fetch;
     const connectionId = `${dbType}-1`;
 
-    connectionStore.addEphemeralConnection(oracleCompatibleConn(connectionId, dbType));
+    connectionStore.addEphemeralConnection(clearableQuerySchemaConn(connectionId, dbType));
     const tabId = store.createTab(connectionId, "SERVICE", "Query", "query", "REPORTING");
     const closedSessions: any[] = [];