Sys_context issue

Question

I need a sys_context which can be accessed globally across the instance.
And this does just that:
dbms_session.set_context( namespace  => 'my_ctx',  attribute  => 'key', value  => theKey)Every session can reterive the value with:
sys_context('my_ctx', 'key') The problems comes after this:
  dbms_session.set_identifier( sessionId );Once this is issued, then getting the context stops working:
sys_context('my_ctx', 'key') I understand why and can overcome it by resetting the context with the sessionId:
dbms_session.set_context (  namespace  => 'my_ctx',   attribute  => 'key',  value  => theKey, client_id  => sessionId)Problem is I have some variables which are common to all and I’d rather not need to reset each one after set_identifier() is issued.
Is there a way to grab the key value which is not associated with a sessionId?
I've tried creating a 2nd sys_context for these instance wide globals and it behaves the same way.
I'd like to solve this as a sys_context and not as global procedure variable. I'd like something which will not switch contexts when being used in a sql statement. Do I have to compromise and use a global temp table? The key value will not change...I have not tired a deterministic function or an authId function.....hummm, authId might work...wonder if that would cause a context switch? I'll try it now.

Answer 1

sb92075 wrote:
With any other exception code silently terminates just like normal successful completion.Really?
SQL> declare
  2      kv varchar2(64);
  3  begin
  4      select  value
  5        into  kv
  6        from  v$parameter;
  7    exception
  8      when no_data_found then null;
  9  end;
10  /
declare
ERROR at line 1:
ORA-01422: exact fetch returns more than requested number of rows
ORA-06512: at line 4
SQL> declare
  2      kv varchar2(1);
  3  begin
  4      select  name
  5        into  kv
  6        from  v$parameter
  7        where rownum = 1;
  8    exception
  9      when no_data_found then null;
10  end;
11  /
declare
ERROR at line 1:
ORA-06502: PL/SQL: numeric or value error: character string buffer too small
ORA-06512: at line 4
SQL>SY.