demonstrates the use of DBMS_SQL to execute an ALTER SESSION statement.

    
SQL>
SQL> CREATE OR REPLACE PROCEDURE AlterSession(
  2    p_SessionString IN VARCHAR2) AS
  3
  4    v_CursorID INTEGER;
  5    v_Dummy INTEGER;
  6  BEGIN
  7    v_CursorID := DBMS_SQL.OPEN_CURSOR;
  8
  9    DBMS_SQL.PARSE(v_CursorID, p_SessionString, DBMS_SQL.NATIVE);
 10    v_Dummy := DBMS_SQL.EXECUTE(v_CursorID);
 11  END AlterSession;
 12  /

Procedure created.

SQL>
SQL> column sysdate format a30
SQL> SELECT SYSDATE FROM dual;

SYSDATE
------------------------------
Jun 19, 2008 20:38:44

1 row selected.

SQL>
SQL> DECLARE
  2    sqlString VARCHAR2(100);
  3  BEGIN
  4    sqlString := 'ALTER SESSION SET NLS_DATE_FORMAT = ' ||
  5      '''Mon DD, YYYY HH24:MI:SS''';
  6    AlterSession(sqlString);
  7  END;
  8  /

PL/SQL procedure successfully completed.

SQL>
SQL> SELECT SYSDATE FROM dual;

SYSDATE
------------------------------
Jun 19, 2008 20:38:44

1 row selected.

SQL>

Related examples in the same category

1.	alter the session with the ALTER SESSION statement and set the session's time zone forward
2.	alter session set nls_date_format = 'dd-MON-yyyy hh24:mi:ss';
3.	alter session set OPTIMIZER_MODE = RULE
4.	Adjust your session time zone to -08:00, display the contents of your time table.
5.	alter session set cursor_sharing = force
6.	alter session set use_stored_outlines
7.	Event-based call and exception tracing
8.	event-based call and exception tracing.
9.	SQL trace
10.	uses dynamic SQL to issue an ALTER SESSION statement.
11.	ALTER SESSION SET QUERY_REWRITE_ENABLED
12.	alter session set sql_trace=true
13.	sql_trace a stored procedure
14.	Set the following session parameters to enable query rewrite:
15.	If your session time zone is not US/Central (-06:00), alter your session to Central time:
16.	alter session set nls_date_format = 'DD-MON-YYYY HH24:MI:SS'
17.	Alter time_zone
18.	sessiontimezone, current_timestamp
19.	interaction between ALTER SESSION and autonomous transactions.
20.	ALTER SESSION SET SQL_TRACE = TRUE
21.	ALTER SESSION SET optimizer_dynamic_sampling
22.	alter session set NLS_DATE_FORMAT='DD-MM-YYYY'
23.	alter session set current_schema=Smart
24.	alter session set db_file_multiblock_read_count
25.	alter session set hash_area_size
26.	alter session set nls_date_format='dd-mm-yyyy', nls_language=Dutch, nls_currency='Eur'
27.	alter session set optimizer_index_cost_adj, alter session set optimizer_index_caching
28.	alter session set optimizer_max_permutations=80000
29.	alter session set optimizer_mode=all_rows
30.	alter session set optimizer_mode=first_rows
31.	alter session set query_rewrite_integrity=enforced
32.	alter session set sort_area_size = 102400000
33.	alter session set workarea_size_policy=manual
34.	alter system flush shared_pool
35.	alter system quiesce restricted
36.	alter system resume
37.	alter system suspend
38.	set optimizer_features_enable = '8.1.5' scope = spfile
39.	show filestat
40.	show parameter optimizer_features
41.	show verify
42.	If your session time zone is not US/Central Standard Time (-06:00), alter your session to Central Standard time:

demonstrates the use of DBMS_SQL to execute an ALTER SESSION statement. : Session variable « SQL Plus « Oracle PL / SQL

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