Connection String Options
The connection string properties are the various options that can be used to establish a connection. This section provides a complete list of the options you can configure in the connection string for this provider. Click the links for further details.
For more information on connecting, see Establishing a Connection.
| Property | Description |
| AuthScheme | The type of authentication to use when connecting to remote services. |
| AccessKey | Your account access key. This value is accessible from your security credentials page. |
| SecretKey | Your account secret key. This value is accessible from your security credentials page. |
| User | The user account used to authenticate. |
| Password | The password used to authenticate the user. |
| SharePointEdition | The edition of SharePoint being used. Set either SharePointOnline or SharePointOnPremise. |
| Property | Description |
| ConnectionType | Specifies the file storage service, server, or file access protocol through which your Microsoft Excel files are stored and retreived. |
| URI | The Uniform Resource Identifier (URI) for the Excel resource location. |
| DefineTables | Map Excel ranges to table names. |
| Header | Indicates whether the first row should be used as a column header. |
| Orientation | Indicates whether the data in Excel is laid out horizontally or vertically. |
| ExcelFile | The location of an Excel file. |
| BufferChanges | Indicates whether to hold changes to the data in memory until the connection is closed. |
| Region | The hosting region for your S3-like Web Services. |
| ProjectId | The Id of the project where your Google Cloud Storage instance resides. |
| OracleNamespace | The Oracle Cloud Object Storage namespace to use. |
| StorageBaseURL | The URL of a cloud storage service provider. |
| UseVirtualHosting | If true (default), buckets will be referenced in the request using the hosted-style request: http://yourbucket.s3.amazonaws.com/yourobject. If set to false, the bean will use the path-style request: http://s3.amazonaws.com/yourbucket/yourobject. Note that this property will be set to false, in case of an S3 based custom service when the CustomURL is specified. |
| UseLakeFormation | When this property is set to true, AWSLakeFormation service will be used to retrieve temporary credentials, which enforce access policies against the user based on the configured IAM role. The service can be used when authenticating through OKTA, ADFS, AzureAD, PingFederate, while providing a SAML assertion. |
| Property | Description |
| AWSAccessKey | Specifies your AWS account access key. This value is accessible from your AWS security credentials page. |
| AWSSecretKey | Your AWS account secret key. This value is accessible from your AWS security credentials page. |
| AWSRoleARN | The Amazon Resource Name of the role to use when authenticating. |
| AWSPrincipalARN | The ARN of the SAML Identity provider in your AWS account. |
| AWSRegion | The hosting region for your Amazon Web Services. |
| AWSSessionToken | Your AWS session token. |
| AWSExternalId | A unique identifier that might be required when you assume a role in another account. |
| MFASerialNumber | The serial number of the MFA device if one is being used. |
| MFAToken | The temporary token available from your MFA device. |
| CredentialsLocation | The location of the settings file where MFA credentials are saved. |
| TemporaryTokenDuration | The amount of time (in seconds) a temporary token will last. |
| AWSWebIdentityToken | The OAuth 2.0 access token or OpenID Connect ID token that is provided by an identity provider. |
| Property | Description |
| AzureStorageAccount | The name of your Azure storage account. |
| AzureAccessKey | The storage key associated with your Azure account. |
| AzureSharedAccessSignature | A shared access key signature that may be used for authentication. |
| AzureTenant | Identifies the Microsoft Excel tenant being used to access data, either by name (for example, contoso.omnicrosoft.com) or ID. (Conditional). |
| AzureEnvironment | Specifies the Azure network environment to which you will connect. Must be the same network to which your Azure account was added. |
| Property | Description |
| SSOLoginURL | The identity provider's login URL. |
| SSOProperties | Additional properties required to connect to the identity provider, formatted as a semicolon-separated list. |
| SSOExchangeUrl | The URL used for consuming the SAML response and exchanging it for service specific credentials. |
| Property | Description |
| AllowFormula | Whether or not to treat values starting with an equals (=) sign as formulas during INSERTs and updates. |
| EmptyValueMode | Indicates whether to read the empty values as empty or as null. |
| NullValues | A comma separated list which will be replaced with nulls if there are found in the CSV file. |
| IgnoreCalcError | Indicates whether to ignore errors that occurred during the calculation. |
| NullValueMode | Indicates whether to read empty cells as null or as empty. |
| HasCrossSheetReferences | Indicates how cross sheet references are handled. |
| Recalculate | Indicates whether to recalculate all formulas when data is read. |
| ShowEmptyRows | Indicates whether or not the empty rows should be pushed. |
| TypeDetectionScheme | Determines how the provider detects the data types of columns. |
| EnableOleDbCompatibility | Indicates whether to read the data with the same behavior as the Microsoft OleDB driver. |
| UseFastInsert | Indicates whether to use the fastInsert when executing INSERT Statement. |
| AggregateFiles | Allows URI to be set to a local directory instead of a single file. Aggregates the contents of all identically structured files in the directory to one table per sheet. |
| SkipTop | Skips the number of rows specified starting from the top. |
| IncludeCustomNames | Indicates whether or not the defined names should be pushed. |
| IncludeSubdirectories | Indicates whether to include files in subdirectories when listing files. |
| MetadataDiscoveryURI | Indicates which file is considered the metadata document when the AggregateFiles is set to true. |
| PathSeparator | Determines the character which will be used to replace the file separator. |
| Property | Description |
| InitiateOAuth | Specifies the process for obtaining or refreshing the OAuth access token, which maintains user access while an authenticated, authorized user is working. |
| OAuthVersion | The version of OAuth being used. |
| OAuthClientId | Specifies the client Id that was assigned the custom OAuth application was created. (Also known as the consumer key.) This ID registers the custom application with the OAuth authorization server. |
| OAuthClientSecret | Specifies the client secret that was assigned when the custom OAuth application was created. (Also known as the consumer secret ). This secret registers the custom application with the OAuth authorization server. |
| OAuthAccessToken | A token received after authentication to the OAuth network, granting the user access. The access token is used in place of the user's login ID and password, which stay on the server. |
| OAuthAccessTokenSecret | The OAuth access token secret for connecting using OAuth. |
| OAuthSettingsLocation | Specifies the location of the settings file where OAuth values are saved. Storing OAuth settings in a central location avoids the need for users to enter OAuth connection properties manually each time they log in. It also enables credentials to be shared across connections or processes. |
| CallbackURL | The URL users return to after authenticating to Microsoft Excel via OAuth. |
| Scope | Specifies the scope of the authenticating user's access to the application. Generally specified at the time the custom OAuth application is created (if necessary), so that the authenticating user can obtain the the level of access appropriate to their credentials. |
| OAuthGrantType | Specifies the grant type for the chosen OAuth flow. This value should be the same as the grant_type that was set during OAuth custom application creation. |
| OAuthPasswordGrantMode | Specifies how the OAuth Client Id and Client Secret should be passed. Supported options: BASIC and POST. |
| OAuthIncludeCallbackURL | Whether to include the callback URL in an access token request. |
| OAuthAuthorizationURL | The authorization URL for the OAuth service. |
| OAuthAccessTokenURL | The URL to retrieve the OAuth access token from. |
| OAuthRefreshTokenURL | The URL to refresh the OAuth token from. |
| OAuthRequestTokenURL | The URL the service provides to retrieve request tokens from. This is required in OAuth 1.0. |
| OAuthVerifier | Specifies a verifier code returned from the OAuthAuthorizationURL . Used when authenticating to OAuth on a headless server, where a browser can't be launched. Requires both OAuthSettingsLocation and OAuthVerifier to be set. |
| AuthToken | The authentication token used to request and obtain the OAuth Access Token. |
| AuthKey | The authentication secret used to request and obtain the OAuth Access Token. |
| OAuthParams | A comma-separated list of other parameters to submit in the request for the OAuth access token in the format paramname=value. |
| OAuthRefreshToken | Gets and refreshes the currently-active OAuth Access Token. |
| OAuthExpiresIn | Specifies the duration in seconds, of an OAuth Access Token's lifetime. The token can be reissued to keep access alive as long as the user keeps working. |
| OAuthTokenTimestamp | Displays a Unix epoch timestamp in milliseconds that shows how long ago the current Access Token was created. |
| Property | Description |
| OAuthJWTCert | The JWT Certificate store. |
| OAuthJWTCertType | The type of key store containing the JWT Certificate. |
| OAuthJWTCertPassword | The password for the OAuth JWT certificate used to access a certificate store that requires a password. If the certificate store does not require a password, leave this property blank. |
| OAuthJWTCertSubject | The subject of the OAuth JWT certificate used to locate a matching certificate in the store. Supports partial matches and the wildcard '*' to select the first certificate. |
| OAuthJWTIssuer | The issuer of the Java Web Token. |
| OAuthJWTSubject | The user subject for which the application is requesting delegated access. |
| Property | Description |
| KerberosKDC | The Kerberos Key Distribution Center (KDC) service used to authenticate the user. |
| KerberosRealm | The Kerberos Realm used to authenticate the user. |
| KerberosSPN | The service principal name (SPN) for the Kerberos Domain Controller. |
| KerberosUser | The principal name for the Kerberos Domain Controller. Used in the format host/user@realm. |
| KerberosKeytabFile | The Keytab file containing your pairs of Kerberos principals and encrypted keys. |
| KerberosServiceRealm | The Kerberos realm of the service. |
| KerberosServiceKDC | The Kerberos KDC of the service. |
| KerberosTicketCache | The full file path to an MIT Kerberos credential cache file. |
| Property | Description |
| SSLClientCert | Specifies the TLS/SSL client certificate store for SSL Client Authentication (2-way SSL). This property works in conjunction with other SSL-related properties to establish a secure connection. |
| SSLClientCertType | Specifies the type of key store containing the TLS/SSL client certificate for SSL Client Authentication. Choose from a variety of key store formats depending on your platform and certificate source. |
| SSLClientCertPassword | Specifes the password required to access the TLS/SSL client certificate store. Use this property if the selected certificate store type requires a password for access. |
| SSLClientCertSubject | Specifes the subject of the TLS/SSL client certificate to locate it in the certificate store. Use a comma-separated list of distinguished name fields, such as CN=www.server.com, C=US. The wildcard * selects the first certificate in the store. |
| SSLMode | The authentication mechanism to be used when connecting to the FTP or FTPS server. |
| SSLServerCert | Specifies the certificate to be accepted from the server when connecting using TLS/SSL. |
| Property | Description |
| SSHAuthMode | The authentication method used when establishing an SSH Tunnel to the service. |
| SSHClientCert | A certificate to be used for authenticating the SSHUser. |
| SSHClientCertPassword | The password of the SSHClientCert key if it has one. |
| SSHClientCertSubject | The subject of the SSH client certificate. |
| SSHClientCertType | The type of SSHClientCert private key. |
| SSHUser | The SSH user. |
| SSHPassword | The SSH password. |
| Property | Description |
| FirewallType | Specifies the protocol the provider uses to tunnel traffic through a proxy-based firewall. |
| FirewallServer | Identifies the IP address, DNS name, or host name of a proxy used to traverse a firewall and relay user queries to network resources. |
| FirewallPort | Specifies the TCP port to be used for a proxy-based firewall. |
| FirewallUser | Identifies the user ID of the account authenticating to a proxy-based firewall. |
| FirewallPassword | Specifies the password of the user account authenticating to a proxy-based firewall. |
| Property | Description |
| ProxyAutoDetect | Specifies whether the provider checks your system proxy settings for existing proxy server configurations, rather than using a manually specified proxy server. |
| ProxyServer | The hostname or IP address of the proxy server that you want to route HTTP traffic through. |
| ProxyPort | The TCP port on your specified proxy server (set in the ProxyServer connection property) that has been reserved for routing HTTP traffic to and from the client. |
| ProxyAuthScheme | Specifies the authentication method the provider uses when authenticating to the proxy server specified in the ProxyServer connection property. |
| ProxyUser | The username of a user account registered with the proxy server specified in the ProxyServer connection property. |
| ProxyPassword | The password associated with the user specified in the ProxyUser connection property. |
| ProxySSLType | The SSL type to use when connecting to the proxy server specified in the ProxyServer connection property. |
| ProxyExceptions | A semicolon separated list of destination hostnames or IPs that are exempt from connecting through the proxy server set in the ProxyServer connection property. |
| Property | Description |
| Logfile | Specifes the file path to the log file where the provider records its activities, such as authentication, query execution, and connection details. |
| Verbosity | Specifies the verbosity level of the log file, which controls the amount of detail logged. Supported values range from 1 to 5. |
| LogModules | Specifies the core modules to include in the log file. Use a semicolon-separated list of module names. By default, all modules are logged. |
| MaxLogFileSize | Specifies the maximum size of a single log file in bytes. For example, '10 MB'. When the file reaches the limit, the provider creates a new log file with the date and time appended to the name. |
| MaxLogFileCount | Specifies the maximum number of log files the provider retains. When the limit is reached, the oldest log file is deleted to make space for a new one. |
| Property | Description |
| Location | Specifies the location of a directory containing schema files that define tables, views, and stored procedures. Depending on your service's requirements, this may be expressed as either an absolute path or a relative path. |
| BrowsableSchemas | Optional setting that restricts the schemas reported to a subset of all available schemas. For example, BrowsableSchemas=SchemaA,SchemaB,SchemaC . |
| Tables | Optional setting that restricts the tables reported to a subset of all available tables. For example, Tables=TableA,TableB,TableC . |
| Views | Optional setting that restricts the views reported to a subset of the available tables. For example, Views=ViewA,ViewB,ViewC . |
| Property | Description |
| AutoCache | Specifies whether the content of tables targeted by SELECT queries is automatically cached to the specified cache database. |
| CacheProvider | The namespace of an ADO.NET provider. The specified provider is used as the target database for all caching operations. |
| CacheConnection | The connection string for the specified cache database. |
| CacheLocation | Specifies the path to the cache when caching to a file. |
| CacheTolerance | The tolerance, in seconds, for stale data in the specified cache database. |
| Offline | Get the data from the specified cache database instead of live Microsoft Excel data. |
| CacheMetadata | Determines whether the provider caches table metadata to a file-based cache database. |
| Property | Description |
| BatchSize | Specifies the maximum number of rows included in each batch operation. Set to 0 to submit the entire batch as a single request. |
| Charset | Specifies the session character set for encoding and decoding character data transferred to and from the Microsoft Excel file. The default value is UTF-8. |
| ClientCulture | This property can be used to specify the format of data (e.g., currency values) that is accepted by the client application. This property can be used when the client application does not support the machine's culture settings. For example, Microsoft Access requires 'en-US'. |
| ConnectionLifeTime | Specifies the maximum lifetime of a connection in seconds. When the specified time elapses, the provider closes the connection. Set to 0 or leave empty for no time limit. |
| Culture | This setting can be used to specify culture settings that determine how the provider interprets certain data types that are passed into the provider. For example, setting Culture='de-DE' will output German formats even on an American machine. |
| CustomHeaders | Specifies additional HTTP headers to append to the request headers created from other properties, such as ContentType and From. Use this property to customize requests for specialized or nonstandard APIs. |
| CustomUrlParams | A string of custom URL parameters to be included with the HTTP request, in the form field1=value1&field2=value2&field3=value3. |
| DirectoryRetrievalDepth | Limit the subfolders recursively scanned when IncludeSubdirectories is enabled. |
| FolderId | The ID of a folder in Google Drive. If set, the resource location specified by the URI is relative to the Folder ID for all operations. |
| GenerateSchemaFiles | Indicates the user preference as to when schemas should be generated and saved. |
| IncludeDropboxTeamResources | Indicates if you want to include Dropbox team files and folders. |
| IncludeItemsFromAllDrives | Whether Google Drive shared drive items should be included in results. If not present or set to false, then shared drive items are not returned. |
| MaxRows | Specifies the maximum rows returned for queries without aggregation or GROUP BY. |
| Other | Specifies additional hidden properties for specific use cases. These are not required for typical provider functionality. Use a semicolon-separated list to define multiple properties. |
| PoolIdleTimeout | Specifies the maximum idle time, in seconds, that a connection can remain in the pool before being closed. |
| PoolMaxSize | Specifies the maximum number of connections allowed in the connection pool. The default value is 100. Set to 0 or a negative value to disable pooling. |
| PoolMinSize | Specifies the minimum number of connections maintained in the connection pool. The default value is 1. |
| PoolWaitTime | Specifies the maximum number of seconds a connection request waits for an available connection in the pool. If the wait exceeds this time, an error is returned. The default is 60 seconds. |
| PseudoColumns | Specifies the pseudocolumns to expose as table columns. Use the format 'TableName=ColumnName;TableName=ColumnName'. The default is an empty string, which disables this property. |
| Readonly | Toggles read-only access to Microsoft Excel from the provider. |
| RowScanDepth | The maximum number of rows to scan to look for the columns available in a table. |
| RTK | Specifies the runtime key for licensing the provider. If unset or invalid, the provider defaults to the standard licensing method. Use this property only in environments where the standard licensing method is unsupported or requires a runtime key. |
| StringDecode | Indicates whether to decode hexadecimal characters. |
| Timeout | Specifies the maximum time, in seconds, that the provider waits for a server response before throwing a timeout error. The default is 60 seconds. Set to 0 to disable the timeout. |
| UseConnectionPooling | Enables the connection pooling feature, which allows the provider to reuse existing connections instead of creating new ones for each request. |
| UserDefinedViews | Specifies a filepath to a JSON configuration file defining custom views. The provider automatically detects and uses the views specified in this file. |