# Package org.apache.directory.mavibot.btree.exception

- Exception Summary
  Exception | Description
  --- | ---
  BadTransactionStateException | An exception thrown when we try to use a transaction in a wrong state
  BTreeAlreadyCreatedException | An exception thrown when we try to create a BTree which already exists
  BTreeAlreadyManagedException | An exception thrown when we try to manage a BTree which name is already managed by the RecordManager
  BTreeCreationException | An exception thrown when we try to create a BTree and it fails
  BTreeOperationException | An exception thrown when an operation on a BTree failed
  DuplicateValueNotAllowedException | An exception thrown when we try to add a second value for a key into a BTree that does not accept duplicate values.
  EndOfFileExceededException | An exception thrown when we try to access a page beyond the file's size.
  FileException | An exception thrown when there is a problem writing data on disk
  FreePageException | An exception thrown when we have an error while managing the free pages
  InitializationException | An exception thrown when the BTree initialization failed
  InvalidBTreeException | An exception thrown when the BTree is detected as invalid during a check
  InvalidOffsetException | An exception thrown when the offset is incorrect
  KeyNotFoundException | An exception thrown when we can't find a key in the BTree.
  MissingSerializerException | An exception thrown when we don't have either a key serializer or a value serializer
  PageSizeAlreadySetException | An exception thrown when we try to change the RecordManager Page Size when it's already set.
  RecordManagerException | An exception thrown when we have an exception on a RecordManager operation
  SerializerCreationException | An exception thrown when we can't create a serializer

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