Ha events = false

Question

What are the implications or potential hazards of turning off ha events?
We are a 6 node cluster with load balancing=true, but our system locks up due to a high number of waits on library cache pins. The waits are from the EMN0 process (background process for advance queueing which is used by high availability). Typically we kill the background process and the system frees up. But, we don't want to make this a practice.
We are considering turning off high availability for our connection pools, while support works on a bug fix. Any reason not to?
SR#5703080.993
Bug#4028364

Answer 1

Alex,
Thanks for the prompt reply.
Not having Maximum times in ODP will make things complicated and a myriad of race conditions can occur.
There is an involved example of a Transaction Timeout Cancel that I could implements with a an application Maximum timer on page 5-27 of the Oracle Data Provider for .NET Developer's Guide and it is not easy to implement
However, it is not described anywhere on how to implement a Maximum Connection Timeout.
In the example below from the docs the application will block at the Open() call:
// Connect
string constr = "User Id=scott;Password=tiger;Data Source=oracle";
OracleConnection con = new OracleConnection(constr);
con.Open();
So do we do the following:
// Connect
string constr = "User Id=scott;Password=tiger;Data Source=oracle";
OracleConnection con = new OracleConnection(constr);
*//Set_Application Timer*
con.Open();
OnApplicationTimer()
con.Close()
//Do application timeout processing
What will the Close() do for us here? What will happen if the Connection open is still in progress when we try to close it?
Should we forget attempting to Close() and wait until Oracle decides to return in the first method as shown below?
OnApplicationTimer()
//Do application timeout processing but don't explicitly send Close()
// Connect
string constr = "User Id=scott;Password=tiger;Data Source=oracle";
OracleConnection con = new OracleConnection(constr);
*//Set_Application Timer*
con.Open();
//Eventually it will timeout. If succesful, clo0se immediatly since it is too lpate.
Nathan