We are using activiti engine in a singleton Ejb, running in Glassfish3 against PostgreSQL. Sometimes we get an error when completing a task.
### Error updating database. Cause: org.postgresql.util.PSQLException: ERROR: llave duplicada viola restricción de unicidad «act_ru_variable_pkey»
### The error may involve org.activiti.persistence.insertVariableInstance-Inline
### The error occurred while setting parameters
### Cause: org.postgresql.util.PSQLException: ERROR: llave duplicada viola restricción de unicidad «act_ru_variable_pkey»
This error appears in differents tables every time and seems to be a problem with the field next.dbid in act_ge_property.
We solve this by restarting the server. This time we had to increment next.dbid manually besides restarting the server, to keep working,.
We'd like to know if there is a permanent solution to this problem.
Thanks