Berkeley DB: Db::remove
Description: Berkeley DB: An embedded database programmatic toolkit.
Keywords: embedded,database,programmatic,toolkit,b+tree,btree,hash,hashing,transaction,transactions,locking,logging,access method,access methods,java,C,C++

# Db::remove |

`

###

    #include <db_cxx.h>

    int
    Db::remove(const char *name, const char *subname, u_int32_t flags);

# Description

The Db::remove interface removes the database (or subdatabase) represented by the name and subname combination.

If no subdatabase is specified, the physical file represented by name is removed, incidentally removing all subdatabases that it contained.

No reference count of database use is maintained by Berkeley DB. Applications should not remove databases that are currently in use.

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

Once Db::remove has been called, regardless of its return, the Db handle may not be accessed again.

The Db::remove method either returns a non-zero error value or throws an exception that encapsulates a non-zero error value on failure, and returns 0 on success.

# Environment Variables

DB_HOME
  If the dbenv argument to db_create was initialized using DbEnv::open the environment variable DB_HOME may be used as the path of the database home for the interpretation of the dir. Specifically, Db::remove is affected by the configuration string value of DB_DATA_DIR.

# Errors

If a fatal error occurs in Berkeley DB, the Db::remove method will fail and either return DB_RUNRECOVERY or throw an exception encapsulating DB_RUNRECOVERY, at which point all subsequent database calls will fail in the same way.

In addition, the Db::remove method may fail and throw an exception or return a non-zero error for errors specified for other Berkeley DB and C library or system methods.

### Class

Db

# See Also

Db::close, Db::cursor, Db::del, Db::err, Db::fd, Db::get, Db::get_byteswapped, Db::get_type, Db::join, Db::open, Db::put, Db::remove, Db::set_bt_compare, Db::set_bt_minkey, Db::set_bt_prefix, Db::set_cachesize, Db::set_dup_compare, Db::set_errcall, Db::set_errfile, Db::set_errpfx, Db::set_flags, Db::set_h_ffactor, Db::set_h_hash, Db::set_h_nelem, Db::set_lorder, Db::set_malloc, Db::set_pagesize, Db::set_paniccall, Db::set_realloc, Db::set_re_delim, Db::set_re_len, Db::set_re_pad, Db::set_re_source, Db::stat, Db::sync and Db::upgrade.`

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