Oracle NCA Protocol Overview in The load runner
Oracle NCA is a protocol that handles communication with the Oracle Forms server. Using your browser, you launch the database client, an applet viewer. You perform actions on the NCA database through its applet viewer. This eliminates the need for client software and allows you to perform database actions from all platforms that support the applet viewer.
The NCA environment is a three-tier environment. The user first sends an http call from his browser to a Web server. This call accesses the startup HTML page which invokes the Oracle Applications applet. The client (appletviewer) communicates through the proprietary NCA protocol with the application server (Oracle Forms server) which then submits information to the database server. VuGen records and replays the NCA communication between the client and the Forms server (application server).
The Oracle NCA protocol is commonly used as a multi protocol in combination with Web (HTTP/HTML) or Web (Click and Script). This is the recommended way to record with Oracle NCA. If you are using Oracle NCA as a single protocol, web events are recorded but steps are not generated (or replayed) by default.
If you initially created a single protocol script for Oracle NCA, and at a later stage you require the Web functions for testing, you can regenerate your script in VuGen to add the Web functions, without having to re-record the session. You indicate this from the Protocols node in the Recording Options.
Oracle NCA Protocol Example Scripts:
In the following example, the user selected an item from a list (nca_list_activate_item), pressed a button (nca_button_press), retrieved a list value (nca_lov_retrieve_items), and performed a click in an edit field
(nca_edit_click). The logical names of the objects are the parameters of these functions.
nca_lov_select_item("Responsibilities","General Ledger, Vision Operations");
nca_list_activate_item("FNDSCSGN.NAVIGATOR.LIST.0","+ Journals");
nca_list_activate_item("FNDSCSGN.NAVIGATOR.LIST.0"," Enter");
nca_button_press("GLXJEENT.TOOLBAR.LIST.0");
nca_lov_find_value("Batches","");
nca_lov_retrieve_items("Batches",1,9);
nca_lov_select_item("Batches","AR 1020 Receivables 2537: A 1020");
nca_edit_click("GLXJEENT.FOLDER_QF.BATCH_NAME.0");
In certain tests, such as those performed on Oracle Configurator applications, information returned by one function is required throughout the session. VuGen automatically saves the dynamic information to a parameter, by inserting a web_reg_save_param function into the script. In the following example, the connection information is saved to a parameter called NCAJServSessionID.
web_reg_save_param ("NCAJServSessionId", "LB=\r\n\r\n", "RB=\r",
LAST);
web_url("f60servlet",
"URL=http://usscifforms05.sfb.na/servlet/f60servlet\?config
=mult", LAST);
In the above example, the right boundary is \r. The actual right boundary may differ between systems
Note: We recommend that the user not modify the web_reg_save_param parameters if it was generated automatically. Alternatively, you can manually add a new web_reg_save_param function or add a new
correlation rule.
Oracle NCA Record and Replay Tips:
When recording an Oracle NCA Vuser script, follow these guidelines:
➤ We recommend installing Jinitiator before recording a script.
➤ Close all browsers before you begin recording.
➤ Due to a Netscape limitation, you cannot launch an Oracle NCA session within Netscape when another Netscape browser is already running on the machine.
➤ Record the login procedure in the vuser_init section. Record a typical business process in the Actions section. When you run the script, you can then specify multiple iterations for a specific business process.
➤ VuGen supports the recording of Oracle Forms applications using the Forms Listener Servlet in multi-protocol mode. The application server uses the Forms Listener Servlet to create a runtime process for each client. The runtime process, Forms Server Runtime, maintains a persistent connection with the client and sends information to and from the server.
To support Forms 4.5 in replay, modify the mdrv_oracle_nca.dat file in the dat > mdrv directory to match the following example:
[Oracle_NCA]
ExtPriorityType=protocol
WINNT_EXT_LIBS=ncarp110.dll
WIN95_EXT_LIBS=ncarp110.dll
LINUX_EXT_LIBS=liboranca.so
SOLARIS_EXT_LIBS=liboranca.so
HPUX_EXT_LIBS=liboranca.sl
AIX_EXT_LIBS=liboranca.so
LibCfgFunc=oracle_gui_configure
UtilityExt=lrun_api
To restore Forms support for versions later than 4.5, restore the original values.
The NCA environment is a three-tier environment. The user first sends an http call from his browser to a Web server. This call accesses the startup HTML page which invokes the Oracle Applications applet. The client (appletviewer) communicates through the proprietary NCA protocol with the application server (Oracle Forms server) which then submits information to the database server. VuGen records and replays the NCA communication between the client and the Forms server (application server).
The Oracle NCA protocol is commonly used as a multi protocol in combination with Web (HTTP/HTML) or Web (Click and Script). This is the recommended way to record with Oracle NCA. If you are using Oracle NCA as a single protocol, web events are recorded but steps are not generated (or replayed) by default.
If you initially created a single protocol script for Oracle NCA, and at a later stage you require the Web functions for testing, you can regenerate your script in VuGen to add the Web functions, without having to re-record the session. You indicate this from the Protocols node in the Recording Options.
Oracle NCA Protocol Example Scripts:
In the following example, the user selected an item from a list (nca_list_activate_item), pressed a button (nca_button_press), retrieved a list value (nca_lov_retrieve_items), and performed a click in an edit field
(nca_edit_click). The logical names of the objects are the parameters of these functions.
nca_lov_select_item("Responsibilities","General Ledger, Vision Operations");
nca_list_activate_item("FNDSCSGN.NAVIGATOR.LIST.0","+ Journals");
nca_list_activate_item("FNDSCSGN.NAVIGATOR.LIST.0"," Enter");
nca_button_press("GLXJEENT.TOOLBAR.LIST.0");
nca_lov_find_value("Batches","");
nca_lov_retrieve_items("Batches",1,9);
nca_lov_select_item("Batches","AR 1020 Receivables 2537: A 1020");
nca_edit_click("GLXJEENT.FOLDER_QF.BATCH_NAME.0");
In certain tests, such as those performed on Oracle Configurator applications, information returned by one function is required throughout the session. VuGen automatically saves the dynamic information to a parameter, by inserting a web_reg_save_param function into the script. In the following example, the connection information is saved to a parameter called NCAJServSessionID.
web_reg_save_param ("NCAJServSessionId", "LB=\r\n\r\n", "RB=\r",
LAST);
web_url("f60servlet",
"URL=http://usscifforms05.sfb.na/servlet/f60servlet\?config
=mult", LAST);
In the above example, the right boundary is \r. The actual right boundary may differ between systems
Note: We recommend that the user not modify the web_reg_save_param parameters if it was generated automatically. Alternatively, you can manually add a new web_reg_save_param function or add a new
correlation rule.
Oracle NCA Record and Replay Tips:
When recording an Oracle NCA Vuser script, follow these guidelines:
➤ We recommend installing Jinitiator before recording a script.
➤ Close all browsers before you begin recording.
➤ Due to a Netscape limitation, you cannot launch an Oracle NCA session within Netscape when another Netscape browser is already running on the machine.
➤ Record the login procedure in the vuser_init section. Record a typical business process in the Actions section. When you run the script, you can then specify multiple iterations for a specific business process.
➤ VuGen supports the recording of Oracle Forms applications using the Forms Listener Servlet in multi-protocol mode. The application server uses the Forms Listener Servlet to create a runtime process for each client. The runtime process, Forms Server Runtime, maintains a persistent connection with the client and sends information to and from the server.
To support Forms 4.5 in replay, modify the mdrv_oracle_nca.dat file in the dat > mdrv directory to match the following example:
[Oracle_NCA]
ExtPriorityType=protocol
WINNT_EXT_LIBS=ncarp110.dll
WIN95_EXT_LIBS=ncarp110.dll
LINUX_EXT_LIBS=liboranca.so
SOLARIS_EXT_LIBS=liboranca.so
HPUX_EXT_LIBS=liboranca.sl
AIX_EXT_LIBS=liboranca.so
LibCfgFunc=oracle_gui_configure
UtilityExt=lrun_api
To restore Forms support for versions later than 4.5, restore the original values.
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