first commit

packages/nodes-base/nodes/Oracle/Sql/methods/credentialTest.ts

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+import type {
+	ICredentialsDecrypted,
+	ICredentialTestFunctions,
+	INodeCredentialTestResult,
+} from 'n8n-workflow';
+import type * as oracleDBTypes from 'oracledb';
+
+import type { OracleDBNodeCredentials } from '../helpers/interfaces';
+import { configureOracleDB } from '../transport';
+
+export async function oracleDBConnectionTest(
+	this: ICredentialTestFunctions,
+	credential: ICredentialsDecrypted,
+): Promise<INodeCredentialTestResult> {
+	const credentials = credential.data as OracleDBNodeCredentials;
+
+	let pool: oracleDBTypes.Pool;
+
+	try {
+		pool = await configureOracleDB.call(this, credentials, {});
+		const conn = await pool.getConnection();
+		await conn.close();
+	} catch (error) {
+		const message = error instanceof Error ? error.message : String(error);
+		return {
+			status: 'Error',
+			message,
+		};
+	}
+	return {
+		status: 'OK',
+		message: 'Connection successful!',
+	};
+}