Precompilers, OCI & OCCI :: Oracle Connection Not Getting Closed

I have Multi-threaded application using pro*c to connect to oracle.

I am using the following piece of code to create a connection to oracle database and preserver the context of created connection.

struct sqlca * tempSqlca = new sqlca;
struct sqlca & sqlca = * tempSqlca;
EXEC SQL BEGIN DECLARE SECTION;
SQL_CONTEXT localContext;

[code].....

I am using the following piece of code to close the connection to the oracle database, I am using the context created in the previous step and passing it to the below code(connection.context)to release the connection.

if (connection.context == 0 || connection.ca == 0)
return true;
// Multithreading: get the communication area of the context
struct sqlca & sqlca = *(connection.ca);
EXEC SQL BEGIN DECLARE SECTION;

[code].....

When the above code is executed there is no exception thrown but the connection is not getting close. I am using the V$SESSION system views to monitor the connection created.

I there anything I am missing in my code for the connection closing to fail.