Is this normal during syncing? I just downloaded .11 and ran monerod on ubuntu.

2017-09-18 19:28:28.513 [P2P0] ERROR cn src/cryptonote_core/cryptonote_core.cpp:662 Exception at [core::handle_incoming_txs()], what=Error finding txpool tx meta: MDB_BAD_TXN: Transaction must abort, has a child, or is invalid

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2 Answers 2


This is a secondary error which happens after a DB error. The DB may or may not be corrupted. The recovery steps, in increasing order of violence:

  • restart monerod
  • restart monerod adding --db-salvage
  • remove the ~/.bitmonero/lmdb directory

I deleted the hidden ~/.bitmonero folder and then reran monerod again and it worked. It is possible that the problem was due to a permissions issue.

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