---
title: "IMS DB-GSAM OPEN,CLOSE,GN Calls"
description: "Top IMS DB DLI calls to use in your projects."
url: https://srinimf.com/2012/02/09/imsdb-gsam-openclosegn-calls/
date: 2012-02-09
modified: 2026-10-05
author: "Srini"
image: https://i0.wp.com/srinimf.com/wp-content/uploads/2012/02/pexels-photo-3769120.jpeg?fit=1880%2C1232&ssl=1
categories: ["IMS DB"]
tags: ["IMS DB Tips and Tricks"]
type: post
lang: en
---

# IMS DB-GSAM OPEN,CLOSE,GN Calls

Here is [my post#1](http://srinimf.com/2012/02/03/imsdb-gsam-tough-questions-1of-1/) if you miss it. Below are the [DLI CALLs](https://srinimf.com/2012/03/05/imsdb-chkpbasicsymbolic-xrst-calls/) commonly use in [IMS DB](https://srinimf.com/2016/10/07/the-list-of-dli-functions-absolutely-need-for-ims-db-projects/) with GSAM programs.

**Entry call:**

```
Entry 'DLITCBL'   Using   TPPCB
GSam-file-Input
Gsam-file-output
```

**Open call:**

```
Call 'CBLTDLI'  Using OPEN
GSam-file-Input
GSam-file-Output
```

**Read call:**

```
Call 'CBLTDLI'  Using GN
GSam-file-Input
```

**Insert call:**

```
Call 'CBLTDLI'  Using Insert
GSam-file-Record
```

**Close call:**

```
Call 'CBLTDLI'  Using Close
GSam-file-Input
GSam-file-Output
```

Finally, how do you know if the file is input or output? In PSB, look for the below syntax to know.

```
Indataset= GSam-file-Input
outdataset=GSam-file-Output.
```

You no need to give a SELECT statement in the [COBOL program](https://srinimf.com/2011/06/15/ims-cobol-sample-program/) because of the above PSB definitions.

[![](https://i0.wp.com/srinimf.com/wp-content/uploads/2020/04/ims-db-free-book.png?resize=1920%2C480&ssl=1)](http://www.exampleproblems.com/wiki/index.php/IMSDB)

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