Oracle Error Codes

stalled waiting for additional transactions to be applied

This process is waiting for additional memory before continuing. Additional log information cannot be read into memory until more transactions have been applied to the database, thus freeing up additional memory.

How to Solve :

No action necessary, this informational statement is provided to record the event for diagnostic purposes. If this message occurs often and changes are not being applied quickly, increase available SGA or the number of apply processes.