Library Version 12.1.6.2

DB_CHANNEL->close()
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## DB_CHANNEL->close()

    #include <db.h>

    int
    DB_CHANNEL->close(DB_CHANNEL *channel, u_int32_t flags);

The `DB_CHANNEL->close()` method closes the DB_CHANNEL handle, freeing any resources allocated to the handle. All DB_CHANNEL handles must be closed before the encompassing environment handle is closed. Also, all on-going messaging operations on the channel should be allowed to complete before attempting to close the channel handle.

After `DB_CHANNEL->close()` has been called, regardless of its return, the DB_CHANNEL handle may not be accessed again.

The `DB_CHANNEL->close()` method returns a non-zero error value on failure and 0 on success.

### Parameters

#### flags

This parameter is currently unused, and must be set to 0.

### Errors

The `DB_CHANNEL->close()` method may fail and return one of the following non-zero errors:

#### EINVAL

If this method is called from a Base API application, or if an invalid flag value or parameter was specified.

### Class

DB_ENV, DB_CHANNEL

### See Also

Replication and Related Methods

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