It might be useful to check pending transactions because they might lock your database. To see pending transactions, click the arrow next to the Transaction Log button in the toolbar and then click Pending Transactions on the dropdown menu:
The upper table of the Pending transactions window shows currently active connections and the number of their transactions. The bottom table shows query details of the connection that is currently in focus in the upper table:
When the Pending transactions window opens, the upper table shows only those connections that have pending transactions. If no connections have pending transactions, the table is empty. To see all connections that are currently active (connected), select the Show all connections checkbox.
You can commit or roll back transactions right from the Pending transactions window: in the upper table, click the row with required uncommitted transactions and then click the Commit or Rollback button, depending on your purpose. If a transaction is committed/rolled back successfully, both buttons are disabled. If the operation is unsuccessful, the system displays an error message.
To see all previous transactions made during the current session, select the Show previous transactions checkbox. To see all queries including non-transactional ones, select the Show all queries checkbox. The green rows are committed transactions, orange (or red) ones are rolled back, rows without a special color are non-transactional or pending transactions.