A Oracle Application Express Installation Troubleshooting

This section contains information on troubleshooting.

See Also:

"Upgrading from a Previous Oracle Application Express Release"

A.1 Reviewing a Log of an Installation Session

The apexins.sql script creates a log file in the apex directory using the naming convention installYYYY-MM-DD_HH24-MI-SS.log. In a successful installation, the log file contains the following text:

Thank you for installing Oracle Application Express.
Oracle Application Express is installed in the APEX_050000 schema.

If the log file contains a few errors, it does not mean that your installation failed. Note that acceptable errors are noted as such in the log file.

A.2 Verifying the Validity of an Oracle Application Express Installation

You can verify the validity of an Oracle Application Express installation by running the following query:

SELECT STATUS FROM DBA_REGISTRY
WHERE COMP_ID = 'APEX';

If the result is VALID, you can assume the installation was successful.

A.3 Downloading and Installing Patches

Check the My Oracle Support website for required patch updates for your installation.

To download required patches:

  1. Use a web browser to view the My Oracle Support website:

    https://support.oracle.com/

  2. Sign in to My Oracle Support.

    Note:

    If you are not a My Oracle Support registered user, click Register here and follow the registration instructions.

  3. On the main My Oracle Support page, click the Patches & Updates tab.

  4. In the Patch Search group, select Product or Family (Advanced).

  5. In the Product field, select Oracle Database.

  6. In the Release field select one or more release numbers.

  7. Click Search.

  8. Any available patch updates are displayed in the Patch Search page.

  9. Select the patch number and click ReadMe. The README page displays and contains information about the patch set and how to apply the patches to your installation.

  10. Return to the Patch Search page, click Download, and save the file on your system.

  11. Use the unzip utility provided with Oracle Database 12c to uncompress the Oracle patch updates that you downloaded from My Oracle Support. The unzip utility is located in the $ORACLE_HOME/bin directory.

A.4 Cleaning Up After a Failed Installation

In a successful installation the following banner displays near the end of the installation:

Thank you for installing Oracle Application Express.
Oracle Application Express is installed in the APEX_050000 schema.

To reinstall, you must either drop the Oracle Application Express database schemas, or run a script to completely remove Application Express from the database, depending upon the installation type.

A.4.1 Reverting to a Previous Release After a Failed Upgrade Installation

In the case of a failed upgrade installation, you may want to revert Oracle Application Express to a previous release and then remove the schemas associated with the current release.

A.4.1.1 Verifying If You Have a Previous Release of Oracle Application Express

To verify whether you have a previous release of Application Express:

  1. Start SQL*Plus and connect to the database where Oracle Application Express is installed as SYS specifying the SYSDBA role. For example:

    • On Windows:

      SYSTEM_DRIVE:\ sqlplus /nolog
SQL> CONNECT SYS as SYSDBA
Enter password: SYS_password

    • On UNIX and Linux:

      $ sqlplus /nolog
SQL> CONNECT SYS as SYSDBA
Enter password: SYS_password

  2. Execute the following command in SQL*Plus:

    select username from dba_users
    where regexp_like(username,'(FLOWS|APEX)_\d{6}')
        and username <> (select table_owner from all_synonyms
        where synonym_name = 'WWV_FLOW'
        and owner = 'PUBLIC')

    If the query above returns any rows, the database contains a previous release of Oracle Application Express.

A.4.1.2 Reverting to a Previous Release

This section describes how to revert to a Oracle Application Express previous release.

A.4.1.2.1 Reverting to Release 1.5

To revert to a previous Oracle Application Express release 1.5:

  1. If you altered your images directory, you must point the text alias /i/ back to images directory for the release you want to revert to. See "Copying the Images Directory."

  2. Start SQL*Plus and connect to the database where Oracle Application Express is installed as SYS specifying the SYSDBA role:

    • On Windows:

      SYSTEM_DRIVE:\ sqlplus /nolog
SQL> SQL> CONNECT SYS as SYSDBA
Enter password: SYS_password

    • On UNIX and Linux:

      $ sqlplus /nolog
SQL> SQL> CONNECT SYS as SYSDBA
Enter password: SYS_password

  3. Execute the following:

    ALTER SESSION SET CURRENT_SCHEMA = FLOWS_010500;
exec flows_010500.wwv_flow_upgrade.switch_schemas('APEX_050000','FLOWS_010500');

  4. See the next section, "Removing the Oracle Application Express Release 5.0 Schema."

A.4.1.2.2 Reverting to Release 1.6

To revert to a Oracle Application Express release 1.6:

  1. If you altered your images directory, you must point the text alias /i/ back to images directory for the release you want to revert to. See "Copying the Images Directory."

  2. Start SQL*Plus and connect to the database where Oracle Application Express is installed as SYS specifying the SYSDBA role:

    • On Windows:

      SYSTEM_DRIVE:\ sqlplus /nolog
SQL> SQL> CONNECT SYS as SYSDBA
Enter password: SYS_password

    • On UNIX and Linux:

      $ sqlplus /nolog
SQL> SQL> CONNECT SYS as SYSDBA
Enter password: SYS_password

  3. Execute the following:

    ALTER SESSION SET CURRENT_SCHEMA = FLOWS_010600;
exec flows_010600.wwv_flow_upgrade.switch_schemas('APEX_050000','FLOWS_010600');

  4. Depending upon the release you are reverting to, execute the appropriate command in SQL*Plus:

  5. See the next section, "Removing the Oracle Application Express Release 5.0 Schema."

A.4.1.2.3 Reverting to Release 2.0

To revert to a previous Oracle Application Express release 2.0:

  1. If you altered your images directory, you must point the text alias /i/ back to images directory for the release you want to revert to. See "Copying the Images Directory."

  2. Start SQL*Plus and connect to the database where Oracle Application Express is installed as SYS specifying the SYSDBA role:

    • On Windows:

      SYSTEM_DRIVE:\ sqlplus /nolog
SQL> SQL> CONNECT SYS as SYSDBA
Enter password: SYS_password

    • On UNIX and Linux:

      $ sqlplus /nolog
SQL> SQL> CONNECT SYS as SYSDBA
Enter password: SYS_password

  3. Execute the following:

    ALTER SESSION SET CURRENT_SCHEMA = FLOWS_020000;
exec flows_020000.wwv_flow_upgrade.switch_schemas('APEX_050000','FLOWS_020000');

  4. See the next section, "Removing the Oracle Application Express Release 5.0 Schema."

A.4.1.2.4 Reverting to Release 2.2

To revert to a previous Oracle Application Express release 2.2:

  1. If you altered your images directory, you must point the text alias /i/ back to images directory for the release you want to revert to. See "Copying the Images Directory."

  2. Start SQL*Plus and connect to the database where Oracle Application Express is installed as SYS specifying the SYSDBA role:

    • On Windows:

      SYSTEM_DRIVE:\ sqlplus /nolog
SQL> SQL> CONNECT SYS as SYSDBA
Enter password: SYS_password

    • On UNIX and Linux:

      $ sqlplus /nolog
SQL> SQL> CONNECT SYS as SYSDBA
Enter password: SYS_password

  3. Execute the following:

    ALTER SESSION SET CURRENT_SCHEMA = FLOWS_020200;
exec flows_020200.wwv_flow_upgrade.switch_schemas('APEX_050000','FLOWS_020200');

  4. See the next section, "Removing the Oracle Application Express Release 5.0 Schema."

A.4.1.2.5 Reverting to Release 3.0

To revert to a previous Oracle Application Express release 3.0:

  1. If you altered your images directory, you must point the text alias /i/ back to images directory for the release you want to revert to. See "Copying the Images Directory."

  2. Change your working directory to apex in the 3.0 source.

  3. Start SQL*Plus and connect to the database where Oracle Application Express is installed as SYS specifying the SYSDBA role:

    On Windows:

    SYSTEM_DRIVE:\ sqlplus /nolog
SQL> SQL> CONNECT SYS as SYSDBA
Enter password: SYS_password

    On UNIX and Linux:

    $ sqlplus /nolog
SQL> SQL> CONNECT SYS as SYSDBA
Enter password: SYS_password

  4. Execute the following:

    set define '^'

@apexvalidate x x FLOWS_030000
ALTER SESSION SET CURRENT_SCHEMA = FLOWS_030000;
exec flows_030000.wwv_flow_upgrade.switch_schemas('APEX_050000','FLOWS_030000');
ALTER SESSION SET CURRENT_SCHEMA = SYS;
declare
    l_apex_version varchar2(30);
begin
    l_apex_version := flows_030000.wwv_flows_release;
    dbms_registry.downgrading('APEX','Oracle Application Express','validate_apex','FLOWS_030000');
    dbms_registry.downgraded('APEX',l_apex_version);
    validate_apex;
end;
/

  5. See the next section, "Removing the Oracle Application Express Release 5.0 Schema."

A.4.1.2.6 Reverting to Release 3.1

To revert to a previous Oracle Application Express release 3.1:

  1. If you altered your images directory, you must point the text alias /i/ back to images directory for the release you want to revert to. See "Copying the Images Directory."

  2. Change your working directory to apex/core in the 3.1 source.

  3. Start SQL*Plus and connect to the database where Oracle Application Express is installed as SYS specifying the SYSDBA role:

    On Windows:

    SYSTEM_DRIVE:\ sqlplus /nolog
SQL> SQL> CONNECT SYS as SYSDBA
Enter password: SYS_password

    On UNIX and Linux:

    $ sqlplus /nolog
SQL> SQL> CONNECT SYS as SYSDBA
Enter password: SYS_password

  4. Execute the following commands:

    @wwv_flow_val.plb
@wwv_dbms_sql.sql
@wwv_dbms_sql.plb

  5. Change your working directory to apex in the 3.1 source.

  6. Start SQL*Plus and connect to the database where Oracle Application Express is installed as SYS specifying the SYSDBA role:

    On Windows:

    SYSTEM_DRIVE:\ sqlplus /nolog
SQL> SQL> CONNECT SYS as SYSDBA
Enter password: SYS_password

    On UNIX and Linux:

    $ sqlplus /nolog
SQL> SQL> CONNECT SYS as SYSDBA
Enter password: SYS_password

  7. Execute the following:

    set define '^'
 
@apexvalidate x x FLOWS_030100
ALTER SESSION SET CURRENT_SCHEMA = FLOWS_030100;
exec flows_030100.wwv_flow_upgrade.switch_schemas('APEX_050000','FLOWS_030100');
ALTER SESSION SET CURRENT_SCHEMA = SYS;
declare
    l_apex_version varchar2(30);
begin
    l_apex_version := flows_030100.wwv_flows_release;
    dbms_registry.downgrading('APEX','Oracle Application Express','validate_apex','FLOWS_030100');
    dbms_registry.downgraded('APEX',l_apex_version);
    validate_apex;
end;
/

  8. See the next section, "Removing the Oracle Application Express Release 5.0 Schema."

A.4.1.2.7 Reverting to Release 3.2

To revert to a previous Oracle Application Express release 3.2:

  1. If you altered your images directory, you must point the text alias /i/ back to images directory for the release you want to revert to. See "Copying the Images Directory."

  2. Change your working directory to apex/core in the 3.2 source.

  3. Start SQL*Plus and connect to the database where Oracle Application Express is installed as SYS specifying the SYSDBA role:

    On Windows:

    SYSTEM_DRIVE:\ sqlplus /nolog
SQL> SQL> CONNECT SYS as SYSDBA
Enter password: SYS_password

    On UNIX and Linux:

    $ sqlplus /nolog
SQL> SQL> CONNECT SYS as SYSDBA
Enter password: SYS_password

  4. Execute the following commands:

    @wwv_flow_val.plb
@wwv_dbms_sql.sql
@wwv_dbms_sql.plb

  5. Start SQL*Plus and connect to the database where Oracle Application Express is installed as SYS specifying the SYSDBA role:

    On Windows:

    SYSTEM_DRIVE:\ sqlplus /nolog
SQL> SQL> CONNECT SYS as SYSDBA
Enter password: SYS_password

    On UNIX and Linux:

    $ sqlplus /nolog
SQL> SQL> CONNECT SYS as SYSDBA
Enter password: SYS_password

  6. Execute the following:

    set define '^'
 
@apexvalidate x x APEX_030200
ALTER SESSION SET CURRENT_SCHEMA = APEX_030200;
exec apex_030200.wwv_flow_upgrade.switch_schemas('APEX_050000','APEX_030200');
ALTER SESSION SET CURRENT_SCHEMA = SYS;
declare
    l_apex_version varchar2(30);
begin
    l_apex_version := apex_030200.wwv_flows_release;
    dbms_registry.downgrading('APEX','Oracle Application Express','validate_apex','APEX_030200');
    dbms_registry.downgraded('APEX',l_apex_version);
    validate_apex;
end;
/

  7. See the next section, "Removing the Oracle Application Express Release 5.0 Schema."

A.4.1.2.8 Reverting to Release 4.0

To revert to a previous Oracle Application Express release 4.0:

  1. Change your working directory to apex/core in the 4.0 source.

  2. Start SQL*Plus and connect to the database where Oracle Application Express is installed as SYS specifying the SYSDBA role:

    On Windows:

    SYSTEM_DRIVE:\ sqlplus /nolog
SQL> SQL> CONNECT SYS as SYSDBA
Enter password: SYS_password

    On UNIX and Linux:

    $ sqlplus /nolog
SQL> SQL> CONNECT SYS as SYSDBA
Enter password: SYS_password

  3. Execute the following commands:

    @wwv_flow_val.sql
@wwv_flow_val.plb
@wwv_dbms_sql.sql
@wwv_dbms_sql.plb

  4. Change your working directory to apex in the 4.0 source.

  5. Start SQL*Plus and connect to the database where Oracle Application Express is installed as SYS specifying the SYSDBA role:

    On Windows:

    SYSTEM_DRIVE:\ sqlplus /nolog
SQL> SQL> CONNECT SYS as SYSDBA
Enter password: SYS_password

    On UNIX and Linux:

    $ sqlplus /nolog
SQL> SQL> CONNECT SYS as SYSDBA
Enter password: SYS_password

  6. Execute the following:

    set define '^'

@apexvalidate x x APEX_040000
ALTER SESSION SET CURRENT_SCHEMA = APEX_040000;
exec apex_040000.wwv_flow_upgrade.switch_schemas('APEX_050000','APEX_040000');
ALTER SESSION SET CURRENT_SCHEMA = SYS;
declare
    l_apex_version varchar2(30);
begin
    l_apex_version := apex_040000.wwv_flows_release;
    dbms_registry.downgrading('APEX','Oracle Application Express','validate_apex','APEX_040000');
    dbms_registry.downgraded('APEX',l_apex_version);
    validate_apex;
end;
/

  7. See the next section, "Removing the Oracle Application Express Release 5.0 Schema."

A.4.1.2.9 Reverting to Release 4.1

To revert to a previous Oracle Application Express release 4.1:

  1. If you altered your images directory, you must point the text alias /i/ back to images directory for the release you want to revert to. See "Copying the Images Directory."

  2. Change your working directory to apex/core in the 4.1 source.

  3. Start SQL*Plus and connect to the database where Oracle Application Express is installed as SYS specifying the SYSDBA role:

    On Windows:

    SYSTEM_DRIVE:\ sqlplus /nolog
SQL> SQL> CONNECT SYS as SYSDBA
Enter password: SYS_password

    On UNIX and Linux:

    $ sqlplus /nolog
SQL> SQL> CONNECT SYS as SYSDBA
Enter password: SYS_password

  4. Execute the following commands:

    @wwv_flow_val.sql
@wwv_flow_val.plb
@wwv_dbms_sql.sql
@wwv_dbms_sql.plb

  5. Change your working directory to apex in the 4.1 source.

  6. Start SQL*Plus and connect to the database where Oracle Application Express is installed as SYS specifying the SYSDBA role:

    On Windows:

    SYSTEM_DRIVE:\ sqlplus /nolog
SQL> SQL> CONNECT SYS as SYSDBA
Enter password: SYS_password

    On UNIX and Linux:

    $ sqlplus /nolog
SQL> SQL> CONNECT SYS as SYSDBA
Enter password: SYS_password

  7. Execute the following:

    set define '^'
 
@apexvalidate x x APEX_040100
ALTER SESSION SET CURRENT_SCHEMA = APEX_040100;
exec apex_040100.wwv_flow_upgrade.switch_schemas('APEX_050000','APEX_040100');
ALTER SESSION SET CURRENT_SCHEMA = SYS;
declare
    l_apex_version varchar2(30);
begin
    l_apex_version := apex_040100.wwv_flows_release;
    dbms_registry.downgrading('APEX','Oracle Application Express','validate_apex','APEX_040100');
    dbms_registry.downgraded('APEX',l_apex_version);
    validate_apex;
end;
/

  8. See the next section, "Removing the Oracle Application Express Release 5.0 Schema."

A.4.1.2.10 Reverting to Release 4.2 in a non-CDB

To revert to a previous Oracle Application Express release 4.2 in a non-CDB:

  1. If you altered your images directory, you must point the text alias /i/ back to images directory for the release you want to revert to. See "Copying the Images Directory."

  2. Change your working directory to apex/core in the 4.2 source.

  3. Start SQL*Plus and connect to the database where Oracle Application Express is installed as SYS specifying the SYSDBA role:

    On Windows:

    SYSTEM_DRIVE:\ sqlplus /nolog
SQL> SQL> CONNECT SYS as SYSDBA
Enter password: SYS_password

    On UNIX and Linux:

    $ sqlplus /nolog
SQL> SQL> CONNECT SYS as SYSDBA
Enter password: SYS_password

  4. Execute the following commands:

    alter session set current_schema = SYS;
 
@core_sys_views.sql
 
grant select on sys.wwv_flow_gv$session to APEX_040200;
 
@wwv_flow_val.sql
@wwv_flow_val.plb
@wwv_dbms_sql.sql
@wwv_dbms_sql.plb
 
begin
    dbms_utility.compile_schema('APEX_040200');
end;
/

  5. Change your working directory to apex in the 4.2 source.

  6. Start SQL*Plus and connect to the database where Oracle Application Express is installed as SYS specifying the SYSDBA role:

    On Windows:

    SYSTEM_DRIVE:\ sqlplus /nolog
SQL> SQL> CONNECT SYS as SYSDBA
Enter password: SYS_password

    On UNIX and Linux:

    $ sqlplus /nolog
SQL> SQL> CONNECT SYS as SYSDBA
Enter password: SYS_password

  7. Execute the following:

    set define '^'
 
@apexvalidate x x APEX_040200
ALTER SESSION SET CURRENT_SCHEMA = APEX_040200;
exec apex_040200.wwv_flow_upgrade.switch_schemas('APEX_050000','APEX_040200');
ALTER SESSION SET CURRENT_SCHEMA = SYS;
declare
    l_apex_version varchar2(30);
begin
    l_apex_version := apex_040200.wwv_flows_release;
    dbms_registry.downgrading('APEX','Oracle Application Express','validate_apex','APEX_040200');
    dbms_registry.downgraded('APEX',l_apex_version);
    validate_apex;
end;
/

  8. See the next section, "Removing the Oracle Application Express Release 5.0 Schema."

A.4.1.2.11 Reverting to Release 4.2 in a CDB

To revert to a previous Oracle Application Express release 4.2 in a CDB:

  1. If you altered your images directory, you must point the text alias /i/ back to images directory for the release you want to revert to. See "Copying the Images Directory."

  2. Change your working directory to apex/core in the 4.2 source.

  3. Create a new text file in that directory named apx42dgrd1.sql consisting of the following:

    alter session set current_schema = SYS;
 
@core_sys_views.sql
 
grant select on sys.wwv_flow_gv$session to APEX_040200;
 
@wwv_flow_val.sql
@wwv_flow_val.plb
@wwv_dbms_sql.sql
@wwv_dbms_sql.plb
 
begin
    dbms_utility.compile_schema('APEX_040200');
end;
/

  4. Create a second new text file in that directory named apx42dgrd.sql consisting of the following:

    set define '^'
 
whenever sqlerror exit
 
column :xe_home new_value OH_HOME NOPRINT
variable xe_home varchar2(255)
 
set serverout on
begin
-- get oracle_home
    sys.dbms_system.get_env('ORACLE_HOME',:xe_home);
    if length(:xe_home) = 0 then
        sys.dbms_output.put_line(lpad('-',80,'-'));
        raise_application_error (
            -20001,
            'Oracle Home environment variable not set' );
    end if;
end;
/
whenever sqlerror continue
 
set termout off
select :xe_home from sys.dual;
set termout on
 
host ^OH_HOME/perl/bin/perl -I ^OH_HOME/rdbms/admin ^OH_HOME/rdbms/admin/catcon.pl -b apx42dgrd apx42dgrd1.sql

  5. Start SQL*Plus and connect to CDB$ROOT of the database where Oracle Application Express is installed as SYS specifying the SYSDBA role:

    On Windows:

    SYSTEM_DRIVE:\ sqlplus /nolog
SQL> SQL> CONNECT SYS as SYSDBA
Enter password: SYS_password

    On UNIX and Linux:

    $ sqlplus /nolog
SQL> SQL> CONNECT SYS as SYSDBA
Enter password: SYS_password

  6. Execute the following commands:

    @apx42dgrd.sql

  7. Change your working directory to apex in the 4.2 source.

  8. Create a new text file in that directory name apx42dgrd1.sql with the following contents:

    set define '^'
 
ALTER SESSION SET CURRENT_SCHEMA = SYS;
 
@apexvalidate x x APEX_040200
 
ALTER SESSION SET CURRENT_SCHEMA = APEX_040200;
exec apex_040200.wwv_flow_upgrade.switch_schemas('APEX_050000','APEX_040200');
ALTER SESSION SET CURRENT_SCHEMA = SYS;
declare
    l_apex_version varchar2(30);
begin
    l_apex_version := apex_040200.wwv_flows_release;
    dbms_registry.downgrading('APEX','Oracle Application Express','validate_apex','APEX_040200');
    dbms_registry.downgraded('APEX',l_apex_version);
    validate_apex;
end;
/

  9. Create a second new text file in that directory named apx42dgrd.sql consisting of the following:

    set define '^'
 
whenever sqlerror exit
 
column :xe_home new_value OH_HOME NOPRINT
variable xe_home varchar2(255)
 
set serverout on
begin
-- get oracle_home
    sys.dbms_system.get_env('ORACLE_HOME',:xe_home);
    if length(:xe_home) = 0 then
        sys.dbms_output.put_line(lpad('-',80,'-'));
        raise_application_error (
            -20001,
            'Oracle Home environment variable not set' );
    end if;
end;
/
whenever sqlerror continue
 
set termout off
select :xe_home from sys.dual;
set termout on
 
host ^OH_HOME/perl/bin/perl -I ^OH_HOME/rdbms/admin ^OH_HOME/rdbms/admin/catcon.pl -b apx42dgrd apx42dgrd1.sql

  10. Start SQL*Plus and connect to CDB$ROOT of the database where Oracle Application Express is installed as SYS specifying the SYSDBA role:

    On Windows:

    SYSTEM_DRIVE:\ sqlplus /nolog
SQL> SQL> CONNECT SYS as SYSDBA
Enter password: SYS_password

    On UNIX and Linux:

    $ sqlplus /nolog
SQL> SQL> CONNECT SYS as SYSDBA
Enter password: SYS_password

  11. Execute the following:

    @apx42dgrd.sql

  12. See the next section, "Removing the Oracle Application Express Release 5.0 Schema."

A.4.1.3 Removing the Oracle Application Express Release 5.0 Schema

After you have reverted to the prior release you can remove the Oracle Application Express 5.0 schema.

A.4.1.3.1 Removing the Oracle Application Express Release 5.0 Schema from a Non-CDB

To remove the release 5.0 schema from a non-CDB:

  1. Start SQL*Plus and connect to the database where Oracle Application Express is installed as SYS specifying the SYSDBA role:

    • On Windows:

      SYSTEM_DRIVE:\ sqlplus /nolog
SQL> SQL> CONNECT SYS as SYSDBA
Enter password: SYS_password

    • On UNIX and Linux:

      $ sqlplus /nolog
SQL> SQL> CONNECT SYS as SYSDBA
Enter password: SYS_password

  2. Execute the following command:

    DROP USER APEX_050000 CASCADE;

    Once you have removed the Oracle Application Express 5.0 schema, you can now attempt the upgrade again.

A.4.1.3.2 Removing the Oracle Application Express Release 5.0 Schema from a CDB

To remove the release 5.0 schema from a CDB:

  1. Create a new text file named remove_apx50_usr1.sql with the following contents:

    alter session set current_schema = SYS;
drop user APEX_050000 cascade;

  2. Create a second new text file named remove_apx50_usr.sql with the following contents:

    set define '^'
whenever sqlerror exit
column :xe_home new_value OH_HOME NOPRINT
variable xe_home varchar2(255)
 
set serverout on
begin
-- get oracle_home
    sys.dbms_system.get_env('ORACLE_HOME',:xe_home);
    if length(:xe_home) = 0 then
        sys.dbms_output.put_line(lpad('-',80,'-'));
        raise_application_error (
            -20001,
            'Oracle Home environment variable not set' );
    end if;
end;
/
whenever sqlerror continue
 
set termout off
select :xe_home from sys.dual;
set termout on
 
host ^OH_HOME/perl/bin/perl -I ^OH_HOME/rdbms/admin ^OH_HOME/rdbms/admin/catcon.pl -b remove_apx50_usr remove_apx50_usr1.sql

  3. Start SQL*Plus and connect to the database where Oracle Application Express is installed as SYS specifying the SYSDBA role:

    • On Windows:

      SYSTEM_DRIVE:\ sqlplus /nolog
SQL> SQL> CONNECT SYS as SYSDBA
Enter password: SYS_password

    • On UNIX and Linux:

      $ sqlplus /nolog
SQL> SQL> CONNECT SYS as SYSDBA
Enter password: SYS_password

  4. Execute the following command:

    @remove_apx50_usr.sql

    Once you have removed the Oracle Application Express 5.0 schema, you can now attempt the upgrade again.

A.4.2 Removing Oracle Application Express from the Database

This section describes how to remove the Oracle Application Express schema, synonyms, and users from the database without deleting the database.

Note:

Do not follow these steps if you have upgraded your database from a prior release, and still want to use the prior release of Oracle Application Express. For information about reverting to a prior release, see "Reverting to a Previous Release." If you are not sure whether you have completed a new installation or an upgrade installation, follow the steps in "Cleaning Up After a Failed Installation" to verify if a previous release of Application Express exists in the database.

To remove Oracle Application Express from the database:

  1. Change your working directory to the apex directory where you unzipped the Oracle Application Express software.

  2. Start SQL*Plus and connect to the database where Oracle Application Express is installed as SYS specifying the SYSDBA role:

    • On Windows:

      SYSTEM_DRIVE:\ sqlplus /nolog
SQL> SQL> CONNECT SYS as SYSDBA
Enter password: SYS_password

    • On UNIX and Linux:

      $ sqlplus /nolog
SQL> SQL> CONNECT SYS as SYSDBA
Enter password: SYS_password

  3. Execute the following command:

    SQL> @apxremov.sql

  4. After successfully removing Application Express using apxremov.sql, you must exit your current SQL*Plus session and reconnect before attempting another install using apexins.sql.

A.5 About Images Displaying Incorrectly in Oracle Application Express

If images in Oracle Application Express do not display correctly, you may have more than one definition of the /i/ alias. To address this issue:

  • If possible, rename the first instance of /i/ to a different alias name.

  • Alternatively, copy the images from the directory where Oracle Application Express was downloaded or the images copied for ORDS to the directory defined by the first /i/ alias.

A.6 About Page Protection Violation

A page protection violation may be caused by manual alteration of protected page items. If this error occurs after installation when trying to log into Oracle Application Express, then stop and start Oracle REST Data Services. If you are unsure of what caused this error, contact the application administrator for assistance.