| Oracle® Database Lite Administration and Deployment Guide Release 10.3 Part Number E12089-02 |
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| Oracle® Database Lite Administration and Deployment Guide Release 10.3 Part Number E12089-02 |
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View PDF |
You can customize Oracle Database Lite by modifying the parameter values defined in your POLITE.INI file, which is available in Windows under %WINDIR%\POLITE.INI and in Linux under $ORACLE_HOME/bin. You must have write permissions on the directory where this file is located to be able to modify the POLITE.INI file.
Note:
On the WinCE and EPOC platforms, this file is named
POLITE.TXT, so that you can double-click on it to open the file.The following discusses the parameters in the different sections in the POLITE.INI file:
The POLITE.INI file centralizes database volume ID assignments, defines parameters for all databases on a system, and defines synchronization parameters. When you install Oracle Database Lite, the installation creates the POLITE.INI file in your Windows 2000, or XP home directory. On Windows CE and EPOC, the file name is POLITE.TXT.
The installation automatically sets the parameters in your POLITE.INI file, but you can modify them to customize the product behavior. To modify the POLITE.INI file, use an ASCII text editor.
The [All Databases] section of the POLITE.INI file contains parameters that define the behavior of the Oracle Lite database. For full details, see Appendix A, "POLITE.INI Parameters for the Oracle Lite Mobile Client" in the Oracle Database Lite Client Guide.
Modify the SYNC section in the POLITE.INI file to control certain synchronization (OCAPI) functions. The following sections list the OCAPI parameters with their corresponding description and an example. OCAPI provides you with the following support functions:
Enable the caller to start the synchronization process from the client side.
Set flags for the synchronization session.
Save user information locally.
Note:
OCAPI is only supported on the Windows 32, Windows CE, and EPOC platforms. For more information, see the Oracle Database Lite Developer's Guide.The msync Client API (OCAPI) is a set of functions that allows programs on client devices to set synchronization parameters and start a synchronization session. You can also use this API to monitor the progress of the synchronization session. OCAPI is the interface to the client side synchronization engine.
As the Administrator, you can set the OCAPI parameters to change the default behavior of OCAPI. When you set the OCAPI parameters in the POLITE.INI file, then the parameter settings are implemented for the client on the first synchronization—based on the client platforms where the parameter settings need to apply.
An OCAPI function communicates with the Mobile Server through the selected transport and synchronizes the local database with the remote Mobile Server.
The following are synchronization parameters that you can modify:
Record the start and end time of a synchronization operation. OCAPI creates a table called C$SYNC_TIME in the conscli.odb file. This file logs the duration of every synchronization process. OCAPI inserts a record in the C$SYNC_TIME table which stores the start and end time of every synchronization operation. The administrator can maintain a log history of synchronization times.
Example
TIME_LOG=TRUE
The above value creates a table called C$SYNC_TIME and inserts one row containing the start and end time of the synchronization process.
Default Value
FALSE
FALSE to turn off timelog feature; TRUE to enable timelog feature.
Set the update log file. If this parameter is set, OCAPI creates a table called C$UPDATE_LOG in the conscli.odb file. For every DML operation received from the server, OCAPI records each operation in the C$UPDATE_LOG table. Each record contains three entries namely Table Name, Client Side Row ID, and the Log Action Type. The Table Name refers to the table that the operation is performed on. The Client Side Row ID (C$UID) is a record pointer that points to the record's Row ID. Type refers to the type of DML operation such as update, insert, and delete.
Example
UPDATE_LOG=TRUE
The above value creates and inserts rows in the C$UPDATE_LOG file. FALSE to turn off update_log feature; TRUE to enable update_log feature.
Default Value
FALSE
View debugging messages that are sent to the debug.txt file, which includes the database name, table names, and the DML operation.
To enable, set this parameter to 1, which writes the debug information regarding the database name, table names, and the DML operation into the debug.txt file. This enables OCAPI to invoke debugging messages.
Set to 0 to turn off debug feature, which is the default.
Default Value
0
Invoke the auto commit count feature for publication items that use manual synchronization. If this parameter is set to 0, Oracle Database Lite calls a commit at the end of processing for each publication.
When the number of records in a transaction is greater than the AUTO_COMMIT_COUNT, then a commit is issued at that time. This occurs only on the first synchronization, complete refresh, or a low memory condition. However, for the fast refresh option, if the auto commit is performed, then a data mismatch will happen between client and server.
During synchronization when AUTO_COMMIT_COUNT is set, the user should not add, update, or delete a database record.
If this parameter is set to 1000, Oracle Database Lite calls commits for every 1000 inserts. This value should be more than 100.
Default Value
The default value for AUTO_COMMIT_COUNT is 250 records on WINCE; this variable is not valid on WIN32 and LINUX platforms.
Specify a directory for temporary files. OCAPI creates a temporary file for saving retrieved data. When a large volume of data is being synchronized, the data received in the temporary file can be written to a flash card to save system memory. This feature is beneficial for WinCE developers. The default is the current directory (C:\). This is useful for saving memory by directing temporary files to an external storage card.
Example
TEMP_DIR=\Storage Card
OCAPI creates a temporary file on the storage card of the Windows CE application. It saves the main memory allocated for the application.
The RESUME_CLIENT_TIMEOUT parameter is the number of seconds that the client should use to timeout network operations. The default is 60 seconds.
Set the total number of seconds that the client should use to resume network timeout operations.
Default Value
60 seconds
Example
RESUME_CLIENT_TIMEOUT=120
The RESUME_CLIENT_MAXSEND parameter is the maximum data size, in KB, that the client should send in a single POST request. This is used in cases where there is a proxy with a small limit on the data size in one request. Specifying a reasonable value, such as 256 KB, can also help clients with limited storage space, as they can free the chunks that have already been transmitted and acknowledged. The default is 1024 KB.
Set the maximum data size in KiloBytes sent by a client in a single POST request. Some proxies maintain fixed limits on data size in one request.
Default Value
1024
Example
RESUME_CLIENT_MAXSEND=2048
Set client synchronization report results for the server.
If set to 0, reports errors to the server during the next synchronization process.
If set to 1, reports errors and creates an extra connection to the server.
If set to 2, reports synchronization success or error cases and creates an extra connection to the server.
Default Value
0
Example
ERROR_REPORT=2
Specify client DB character encoding. This parameter value is the same as values used in Java character encoding. For more information about Java encoding, refer to the following URL:
http://java.sun.com/j2se/1.3/docs/guide/intl/encoding.doc.html
This character encoding affects CHAR and VARCHAR datatypes inside client snapshot tables only.
Default Value
NULL
The default value indicates a native character set.
Set memory threshold value in bytes for synchronization. OCAPI stops synchronization operations when the available memory is less than the specified value. Under low memory conditions, applications can be unstable on a Windows CE device. OCAPI can prevent low memory conditions if you define the threshold correctly. If the available memory is lower than this value, OCAPI displays an error message.
Default Value
524288 (which is equivalent to 512KB)
Validate the Oracle Lite database, using the validatedb.exe after the synchronization process. When an error is reported by the validatedb.exe, OCAPI reports the error to the server. You can set this parameter value from 0 to 100.
If set to 100, OCAPI runs the validatedb.exe for every synchronization process.
If set to 50, OCAPI runs the validatedb.exe for every alternate synchronization process.
If set to 1, OCAPI runs the validatedb.exe, once for every 100 synchronization processes.
Default Value
0, which means that validatedb, by default, is turned off.
By default, the Oracle Lite database used by the Mobile client is not encrypted. However, you can ask for it to be encrypted through the ENCRYPTDB parameter.
EncyrptDB encrypts the Oracle Lite database by using 128 bit Advanced Encryption Standard (AES) encryption. This does not encrypt the data stored within the Oracle Lite database itself; it only encrypts the database as a whole.
Note:
This parameter encrypts the database using the synchronization parameter.If set ENCRYPTDB to 0, encryption is not executed. The database is left in whatever current state it is in.
If set ENCRYPTDB to 1, encryption of the database is executed only when a new Oracle Lite database (ODB) file is created. This is the preferred method if you want an encrypted database. Thus, the database is only encrypted when it is created.
If set ENCRYPTDB to 2, encryption of the database runs after every synchronization process. If you already have a database that is not encrypted, then you would want to set ENCRYPTDB to 2, perform a synchronization—after which, the database is encrypted—and then set ENCRYPTDB back to 1. This way, the database is encrypted, but is not encrypted after every synchronization, which would be a performance hit.
EncryptDB may be executed in the following ways:
The database may be encrypted by setting the ENCRYPTDB=2 parameter under the SYNC category of the polite.ini file. This causes the execution of EncryptDB during the next synchronization. However, if you leave ENCRYPTDB set to 2, it executes with every following synchronization cycle that occurs. Change the value to 1 to prevent this from executing with every synchronization cycle. If you wish to decrypt the database later on, change this to 0 and execute the DecryptDB utility.
EncrypDB may be executed from the command line, but only for Oracle Lite database not using synchronization. The encrypdb executable is described in Section 14.2.3, "Execute EncrypDB Command to Encrypt Database" in the Oracle Database Lite Client Guide.
Even though the utility suggests that you may use EncrypDB to change the password used to connect to the device, do not attempt to use ENCRYPTDB to change the password. This causes problems that commonly end with a Mobile client uninstall/re-install.
If the SDK version of the CAB file is used to install the Mobile Client, mSQL may also be utilized to run the EncryptDB utility. This is located by scrolling over in the tabs until the Tools section appears.
Default Value
0
If you install the Mobile client using setup.exe after you create the self-signed certificate, then a message pops up asking if you want to continue. If you click Yes, then a parameter is added to the polite.ini that tells Oracle Database Lite to not validate the certificate. However, if you install the Mobile client using any other method, you need to set this parameter yourself. Set the SSL_IGNORE_CERT parameter in the polite.ini file to 1.
The Synchronization Agent controls the automatic synchronization for the client. If you do not want automatic synchronization to occur at any time, then disable it by specifying ENABLE=No. The default is Yes.
[SYNC_AGENT] ENABLE=YES|NO SYNC_LOG=TRUE|FALSE
Valid values are as follows
YES: The Sync Agent is enabled and can be started from the syncagent.exe UI. When launched from the command line, the Sync Agent executes as a background process
The mSync executable starts the synchronization agent upon completion of the synchronization and if any of the client databases contain any log based snapshots.
NO: The Sync Agent is disabled and cannot be started from the syncagent.exe UI. Also, if it is launched from the command line where the -start option is specified, then the Sync Agent terminates immediately.
The mSync executable never starts the Sync Agent.
Note:
If the Sync Agent has already been started, then the disable does not take effect until the Sync Agent is stopped. You can stop the Sync Agent with the start/stop methods described in Section 2.2.2, "Enable/Disable Automatic Synchronization for the Client" in the Oracle Database Lite Developer's Guide.In order for the Sync Agent logging to be modified, the user must restart the Sync Agent or run mSync, which restarts the Sync Agent.
Valid values are as follows:
TRUE: Sync Agent Logging is enabled to populate the C$BG_SYNC_LOG table with any status change or error, such as "Sync Agent Started" or "Sync Agent stopped."
FALSE: Sync Agent Logging is disabled and the C$BG_SYNC_LOG table is not populated. Disable Sync Agent Logging to stop uploading log records during synchronization.
Default Value
TRUE
This section describes parameters in the Device Management section: DMC. For full details on device management parameters that can be modified before installing the client, see Section 7.2, "Configuring Mobile Clients Before Installation".
The Device Management parameters are as follows:
The DISABLE_PROMPT parameter accepts a TRUE or FALSE value, which causes the following action:
TRUE: The device checks for software updates available on the server. If updates are available, these are brought down to the client and installed.
FALSE: The device checks for software updates available on the server. If updates are available, the option to bring down the updates and install them is displayed to the user, who decides what action to take. If the client chooses to update, then these are brought down to the client and installed.
The port number on the Mobile device that accepts device management commands from the Mobile Server. By default, the port number is 8521. Do not modify on the client. Even though it is described here, you should only modify the PUSH_PORT variable in the INF file BEFORE the Mobile client is installed. For full details, see Section 7.2, "Configuring Mobile Clients Before Installation".
The day and time to check for software updates for the client. You can modify day and time here or within the DMAgent UI. For details on the DMAgent UI, see Section 7.8, "Using the Device Manager Agent (dmagent) on the Client". If you do want to modify them here, the values are as follows:
Day when the Mobiledevice checks for software updates. Used in combination with UPDATE_TIME. UPDATE_DAY takes 0 - 8 which translates to the following days:
Never = 0
Daily = 1
Sunday = 2
Monday = 3
Tuesday = 4
Wednesday = 5
Thursday = 6
Friday = 7
Saturday = 8
Time of day that the Mobile device checks for software updates from the Mobile Server. Used in combination with UPDATE_DAY. UPDATE_TIME can take values 0 - 23 which translates to the following time:
00:00 = 0
01:00 = 1
12:00 = 12
13:00 = 13
23:00 = 23
Integer value that configures the maximum number of retry attempts before abandoning a server command.
The frequency of how many seconds between the client polls. The DMAGENT connects to the Mobile Server checking for new commands at the defined FREQUENCY interval.
If you turn on the DEBUG parameter in the [DMC] section, then this turns on the debugging for the device manager. All device manager debug messages are written to the _dmdebug.txt file.
To enable, set the DEBUG parameter in the [DMC] section to 1. Set to 0 to turn off debug feature, which is the default.
Default Value
0
The following parameter configures how the client interacts over the network:
You can use certificates that are not signed by a trusted authority on the Mobile Server. A Web-to-Go client will use any certificate for encryption without any configuration modifications. However, for all other clients, if you are using a certificate that is not signed by a trusted authority, such as a self-signed certificate, then set the following parameter in the NETWORK section in the polite.ini (polite.txt) file on the client device:
[NETWORK] DISABLE_SSL_CHECK=YES
This parameter enables the client to use the self-signed certificate for SSL encryption, but not to perform SSL authentication.
If user has a proxy between the Mobile client and Mobile Server, then in order for the Device Manager (dmagent) to access the Mobile Server to poll for command, then configure this parameter to the proxy server URL, including port number.
Format is <hostname>:<port>, as follows:
[NETWORK] HTTP_PROXY=proxy.foo.com:8080
The following content is displayed from a sample POLITE.INI file.
[All Databases] DATABASE_ID=128 DB_CHAR_ENCODING=NATIVE CACHE_SIZE=4096 MAX_INDEX_COLUMNS=5 SQLCOMPATIBILITY=SQL92 NLS_DATE_FORMAT=RR/MM/DD H24,MI,SS NLS_LOCALE=ENGLISH TEMP_DB=c:\temp\olite_ TEMP_DIR=D:\TMP [SYNC] TIME_LOG=1 UPDATE_LOG=0
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