UNINSTALL NODE

## Name

UNINSTALL NODE — Decommission Slony-I node

## Synopsis

`UNINSTALL NODE (options);`

## Description

Restores all tables to the unlocked state, with all original user triggers, constraints and rules, eventually added Slony-I specific serial key columns dropped and the Slony-I schema dropped. The node becomes a standalone database. The data is left untouched.

`ID = ival`

  Node ID of the node to uninstall.

This uses schemadocuninstallnode( ).

The difference between `UNINSTALL NODE` and `DROP NODE` is that all `UNINSTALL NODE` does is to remove the Slony-I configuration; it doesn't drop the node's configuration from replication.

### Warning

If you are using connections that cache query plans (this is particularly common for Java application frameworks with connection pools), the connections may cache query plans that include the pre-`UNINSTALL NODE` state of things, and you will get error messages indicating missing OIDs.

After dropping a node, you may also need to recycle connections in your application.

## Example

      UNINSTALL NODE ( ID = 2 );

## Locking Behaviour

When dropping triggers off of application tables, this will require exclusive access to each replicated table on the node being discarded.

## Version Information

This command was introduced in Slony-I 1.0