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**UNLOCK(**//file//**)**

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| **UNLOCK** | Unlocks a previously locked data file. |
| //file// | The label of a FILE declaration. |

The **UNLOCK** statement unlocks a previously LOCKed data file. It will not unlock a file locked by another user. If the //file// is not locked, or is locked by another user, UNLOCK is ignored. UNLOCK posts no errors.

**Example:**

**LOOP                 !Loop to avoid "deadly embrace"**

** LOCK(Master,1)      !Lock the master file, try for 1 second**

** IF ERRORCODE() = 32 !If someone else has it**

**  CYCLE              !try again**

** END**

** LOCK(Detail,1)      !Lock the detail file, try for 1 second**

** IF ERRORCODE() = 32 !If someone else has it**

** ****UNLOCK****(Master)     !unlock the locked file**

**  CYCLE              !try again**

** END    **

** BREAK               !Break loop when both files are locked**

**END**

**See Also:**

[[lock  exclusive file access .htm|LOCK]]