# End of the program application concurrency bit high, then led to the application can not log in, initially determined that the database connection pool.
show parameter open_cursors show parameter processes
# Number of links is too small to transfer larger.
alter system set open_cursors=2000 scope=spfile; alter system set processes=1500 scope=spfile;
# After editing, find time to restart the database
shutdown immediate; startup;
# Confirm whether already in force
show parameter open_cursors show parameter processes