For the Queue access method, specify that the records are of length
re_len. For the Queue access method, the record length must be
enough smaller than the database's page size that at least one record
plus the database page's metadata information can fit on each database
For the Recno access method, specify that the records are fixed-length,
not byte-delimited, and are of length re_len.
Any records added to the database that are less than re_len bytes
long are automatically padded (see Db::set_re_pad for more
Any attempt to insert records into the database that are greater than
re_len bytes long will cause the call to fail immediately and
return an error.
The Db::set_re_len method configures a database, not only operations performed
using the specified Db handle.
The Db::set_re_len interface may not be called after the Db::open
interface is called.
If the database already exists when
Db::open is called, the information specified to Db::set_re_len will
The Db::set_re_len 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.
The Db::set_re_len method may fail and throw an exception or return a non-zero error for the following conditions:
- An invalid flag value or parameter was specified.
Called after Db::open was called.
The Db::set_re_len 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.
If a catastrophic error has occurred, the Db::set_re_len method may fail and
either return DB_RUNRECOVERY or throw a
in which case all subsequent Berkeley DB calls will fail in the same way.
Databases and Related Methods
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