Exceptions while running sync process

Hi,
We are executing a sync process which has a sequence of SQLs that execute and it synchronizes the data between the two databases. Free space available on the drive where these databases have been installed is upto 2GB. While running/executing the sync file I am getting following three different types of exceptions at different points of execution, I am not sure whether it is due to large size of queries or large size of data that they are syncing

1. ORA-00911: invalid character

2. Not enough storage is available to complete this operation.

3. Operation is not allowed when the object is closed.

Same Sync file is running absolutely well at Deployment environment which is certainly having better environment than development environment.

What is this problem exactly and what is its remedy?

Thanks & Regards,
Sandy