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Boolean : Number, Char, Varchar2 or Nvarchar2 ?

Mohamed Ali SoltaniNov 27 2017 — edited Nov 28 2017

Hello,

In the source code of the application I'm developing using Oracle Forms, I need to use the boolean type that does not exist in Oracle SQL.

I am a little confused, then, between the use of type Number, Char, Varchar2 or Nvarchar2.

What do you recommend ?

This post has been answered by Amatu Allah Neveen Ebrahim on Nov 27 2017
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Comments

sb92075
912342 wrote:
Hi,

I'm trying to make heterogeneus connection, but when edited listener.ora return this error:

TNS-01201: Listener cannot find executable /app/oracle/product/11.2.0/db_home2/bin/oracle for SID ORCL

Any suggestions?
(PROGRAM=dg4odbc)
give fully qualified pathname for PROGRAM

PROGRAM=/u01/app/oracle/whatever/dg4odbc
Zakr
* (PROGRAM= /opt/progress/datadirect/Connect_for_ODBC_70/dg4odbc)*


[root@localhost admin]# lsnrctl start

LSNRCTL for Linux: Version 11.2.0.2.0 - Production on 13-FEB-2012 10:14:51

Copyright (c) 1991, 2010, Oracle.  All rights reserved.

Starting /home/oracle/app/oracle/product/11.2.0/dbhome_2/bin/tnslsnr: please wait...

TNSLSNR for Linux: Version 11.2.0.2.0 - Production
System parameter file is /home/oracle/app/oracle/product/11.2.0/dbhome_2/network/admin/listener.ora
Log messages written to /home/oracle/app/oracle/diag/tnslsnr/localhost/listener/alert/log.xml
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=0.0.0.0)(PORT=1521)))
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=0.0.0.0)(PORT=80))(PROTOCOL_STACK=(PRESENTATION=HTTP)(SESSION=RAW)))
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=0.0.0.0)(PORT=21))(PROTOCOL_STACK=(PRESENTATION=FTP)(SESSION=RAW)))

Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=0.0.0.0)(PORT=1521)))
STATUS of the LISTENER
------------------------
Alias                     LISTENER
Version                   TNSLSNR for Linux: Version 11.2.0.2.0 - Production
Start Date                13-FEB-2012 10:14:51
Uptime                    0 days 0 hr. 0 min. 0 sec
Trace Level               off
Security                  ON: Local OS Authentication
SNMP                      OFF
Listener Parameter File   /home/oracle/app/oracle/product/11.2.0/dbhome_2/network/admin/listener.ora
Listener Log File         /home/oracle/app/oracle/diag/tnslsnr/localhost/listener/alert/log.xml
Listening Endpoints Summary...
  (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=0.0.0.0)(PORT=1521)))
  (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=0.0.0.0)(PORT=80))(PROTOCOL_STACK=(PRESENTATION=HTTP)(SESSION=RAW)))
  (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=0.0.0.0)(PORT=21))(PROTOCOL_STACK=(PRESENTATION=FTP)(SESSION=RAW)))
The listener supports no services
The command completed successfully
The listener supports no services
this is normal?

Edited by: 912342 on 13/02/2012 10:20

Edited by: 912342 on 13/02/2012 10:20

Edited by: 912342 on 13/02/2012 10:20
Pierre Forstmann
Yes, you may need to wait up to 1 minute for database instance automatic registration. If you don't want to wait, you need to run for each database instance:
alter system register;
Richard Harrison .
Hi,
What is your ORACLE_HOME?

is it

/home/oracle/app/oracle/product/11.2.0/dbhome_2

or

/app/oracle/product/11.2.0/dbhome_2

????

The listener log implies the first one but the parameter file implies the 2nd one?

Cheers,
Harry
Zakr
[root@localhost admin]# echo $ORACLE_HOME 
/home/oracle/app/oracle/product/11.2.0/dbhome_2

[root@localhost admin]# lsnrctl status

LSNRCTL for Linux: Version 11.2.0.2.0 - Production on 13-FEB-2012 11:10:36

Copyright (c) 1991, 2010, Oracle.  All rights reserved.

Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=0.0.0.0)(PORT=1521)))
STATUS of the LISTENER
------------------------
Alias                     LISTENER
Version                   TNSLSNR for Linux: Version 11.2.0.2.0 - Production
Start Date                13-FEB-2012 11:08:14
Uptime                    0 days 0 hr. 2 min. 21 sec
Trace Level               off
Security                  ON: Local OS Authentication
SNMP                      OFF
Listener Parameter File   /home/oracle/app/oracle/product/11.2.0/dbhome_2/network/admin/listener.ora
Listener Log File         /home/oracle/app/oracle/diag/tnslsnr/localhost/listener/alert/log.xml
Listening Endpoints Summary...
  (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=0.0.0.0)(PORT=1521)))
  (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=0.0.0.0)(PORT=80))(PROTOCOL_STACK=(PRESENTATION=HTTP)(SESSION=RAW)))
  (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=0.0.0.0)(PORT=21))(PROTOCOL_STACK=(PRESENTATION=FTP)(SESSION=RAW)))
Services Summary...
Service "orcl" has 1 instance(s).
  Instance "orcl", status READY, has 2 handler(s) for this service...
Service "orclXDB" has 1 instance(s).
  Instance "orcl", status READY, has 1 handler(s) for this service...
The command completed successfully
I changed the oracle_home on listener ... but the service postgresql does not appear yet.
Richard Harrison .
Hi again,
The top comment line of your listener.ora implies it is located in db_home1 but you are starting the listener from dbhome2. If there is no config at all then a default config will be started up. This looks like what might be happening make sure the listener.ora is located in the correct ORACLE_HOME.

Cheers,
Harry
Zakr
thanks all... this solved..

create public database link pt connect to "postgres" identified by "postgres" using 'PG_SERVICE';

but now.. when create the dblink.. and try select.. return this error.
missing some lib?


select * from table_x@pt
*
ERROR at line 1:
ORA-28500: connection from ORACLE to a non-Oracle system returned this message:
ORA-28541: Error in HS init file on line 18.
ORA-02063: preceding 2 lines from PT


initPOSTGRESQL.ora
# This is a sample agent init file that contains the HS parameters that are
# needed for the Database Gateway for ODBC

# HS init parameters
#
HS_FDS_CONNECT_INFO = "PostgreSQL Wire Protocol"
HS_FDS_TRACE_LEVEL = ON
HS_LANGUAGE = "BRAZILIAN PORTUGUESE_BRAZIL.WE8ISO8859P1"
HS_NLS_DATE_FORMAT = "DD/MM/YYYY HH24:MI:SS"
HS_OPEN_CURSORS = 200
HS_FDS_SHAREABLE_NAME = /opt/Connect_for_ODBC_70/lib/libodbc.so
#
# ODBC specific environment variables
#
set ODBCINI=/opt/Connect_for_ODBC_70/odbc.ini
set ODBCINSTINI=/opt/Connect_for_ODBC_70/odbcinst.ini
set LD_LIBRARY_PATH = /opt/Connect_for_ODBC_70/lib:
/home/oracle/app/oracle/product/11.2.0/dbhome_2/lib:
/lib:/usr/lib:/etc)
set PATH=/opt/Connect_for_ODBC_70/lib:/home/oracle/app/oracle/product/11.2.0/dbhome_2/lib:
/lib:/usr/lib
#
# Environment variables required for the non-Oracle system
#
#set [envvar]=[value]
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
Richard Harrison .
Hi again,
Is LD_LIBRARY_PATH all on one line or spread over 3 lines it looks like it is 3 lines that should all be joined together?

Cheers,
Harry
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Locked on Dec 26 2017
Added on Nov 27 2017
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