There is code in activiti that is looking for "ACT_%" tables. This doesn't work for Oracle as _ is a wildcard and it is picking up ACTION_TABLE which it then tries unsuccessfully to do some other query on (count?).
For oracle it should be 'ACT\_%' with the escape specified: ESCAPE '\'. Either that or come up with a more robust/generic way of getting a list of activiti tables than hard coding 'ACT_'.
Anyone have a workaround other than downloading and changing the source code?