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SAP HANA Database (via JDBC) - Import

Availability-note AWS

Bridge Requirements

This bridge:

  • requires Internet access to https://repo.maven.apache.org/maven2/ and/or other tool sites to download drivers into <TDC_HOME>/data/download/MIMB/.

Bridge Specifications

Vendor SAP
Tool Name HANA Database
Tool Version 15
Tool Web Site http://www.sap.com/pc/tech/database/software/adaptive-server-enterprise/index.html
Supported Methodology [Relational Database] Multi-Model, Data Store (Physical Data Model, Stored Procedure Expression Parsing) via JDBC API
Data Profiling
Incremental Harvesting
Multi-Model Harvesting
Remote Repository Browsing for Model Selection

SPECIFICATIONS
Tool: SAP / HANA Database version 15 via JDBC API
See http://www.sap.com/pc/tech/database/software/adaptive-server-enterprise/index.html
Metadata: [Relational Database] Multi-Model, Data Store (Physical Data Model, Stored Procedure Expression Parsing)
Component: JdbcSAPHana version 11.2.0

DISCLAIMER
This import bridge requires internet access to download third-party libraries:
- such as https://repo.maven.apache.org/maven2/ to download open source third-party libraries,
- and more sites for other third-party software such as database specific JDBC drivers.

The downloaded third-party libraries are stored into $HOME/data/download/MIMB/
- If HTTPS fails, the import bridge then tries with HTTP.
- If a proxy is used to access internet, you must configure that proxy in the JRE (see the -j option in the Miscellaneous parameter).
- If the import bridge does not have full access to internet, that $HOME/data/download/MIMB/ directory can be copied from another server with internet access where the command $HOME/bin/MIMB.sh (or .bat) -d can be used to download all third-party libraries used by all bridges at once.

By running this import bridge, you hereby acknowledge responsibility for the license terms and any potential security vulnerabilities from these downloaded third-party software libraries.

OVERVIEW
This import bridge uses a JDBC connection to a SAP HANA database server to extract all its metadata (e.g. Schemas, Tables, Columns, Data Types.) and parse any SQL (e.g. Views, Stored Procedures) to produce the data flow lineage.

This import bridge imports the SAP HANA database server metadata as multi models with one model per database instance (not at the schema level). Further imports (incremental harvesting) will detect changes in database instances to only import changed database instances (reusing already harvested unchanged database instances).

REQUIREMENTS
See the driver Location parameter for any JDBC driver requirements.
See the PERMISSIONS section below.

AUTHENTICATION
n/a

PERMISSIONS
Any import bridge is warranted to be read only and only extracts metadata. Therefore the user of this import bridge requires much less permissions than classic users needing to read/write data.

In case of the SAP HANA Database:
This import bridge will connect to the sys tables which exists in SAP HANA environment when importing metadata.

The user specified must have the permission to SELECT metadata of schemas imported.
CREATE USER user1 PASSWORD password1 NO FORCE_FIRST_PASSWORD_CHANGE;
GRANT SELECT METADATA ON SCHEMA schema1 TO user1;
GRANT SELECT METADATA ON SCHEMA schema2 TO user1;

Also the username specified must have the permission to SELECT on system table _SYS_REPO.ACTIVE_OBJECT and on system schemas _SYS_BI and _SYS_BIC.
GRANT SELECT ON _SYS_REPO.ACTIVE_OBJECT TO user1;
GRANT SELECT ON SCHEMA _SYS_BI TO user1;
GRANT SELECT ON SCHEMA _SYS_BIC TO user1;

The restricted user created as follows
CREATE RESTRICTED USER restricteduser2 PASSWORD password2 NO FORCE_FIRST_PASSWORD_CHANGE;
must have the permission described above as well as these additional permissions:
GRANT RESTRICTED_USER_JDBC_ACCESS TO restricteduser2;
ALTER USER restricteduser2 ENABLE CLIENT CONNECT;
GRANT SELECT ON SYS.SEQUENCES TO restricteduser2;
GRANT SELECT ON SYS.TRIGGERS TO restricteduser2;
GRANT SELECT ON SYS.REMOTE_SOURCES TO restricteduser2;
GRANT SELECT ON SYS.VIRTUAL_TABLES TO restricteduser2;
GRANT SELECT ON SYS.VIRTUAL_COLUMNS TO restricteduser2;
GRANT SELECT ON SYS.CDS_ARTIFACT_NAMES TO restricteduser2;
GRANT SELECT ON SYS.FUNCTION_PARAMETER_COLUMNS TO restricteduser2;

Driver details:
- driver name: SAP (com.sap.db.jdbc.Driver)
- driver version 2.2.33.1510080117
- file: ngdbc.jar (788,596 bytes)

FREQUENTLY ASKED QUESTIONS
Q: I am getting this error during import "SQL error (SAP DBTech JDBC: [258]: insufficient privilege: Not authorized) occurred when executing the query:"
A: Due to a change in our methodology to improve support for HANA Calculated Views (CV), you must add "SELECT privilege on _SYS_RT.CDS_ARTIFACT".

LIMITATIONS
Refer to the current general known limitations at https://metaintegration.com/Products/MIMB/Help/#!Documents/mimbknownlimitations.html

This import bridge parses the HANA Calculation Views to generate feature/column level data flow lineage.
However, this import bridge does not support the lineage from HANA Attribute Views and Analytical Views as they have been deprecated by SAP.

Script based calculation views are deprecated by SAP, and not supported.

https://archive.sap.com/documents/docs/DOC-73509

SUPPORT
Provide a troubleshooting package with:
- the debug log (can be set in the UI or in conf/conf.properties with MIR_LOG_LEVEL=6)
- the metadata backup if available (can be set in the Miscellaneous parameter with -backup option, although this common option is not implemented on all bridges for technical reasons).


Bridge Parameters

Parameter Name Description Type Values Default Scope
Driver location The file directory where the JDBC driver files are located. When the value is empty (default), the bridge tries to download the driver files from Maven.

The default driver class name is 'com.sap.db.jdbc.Driver'.

If the driver specified has a different class name, specify that name using the -driver.className option in the Miscellaneous bridge parameter.		 DIRECTORY      
Host The host name used by JDBC to connect to the database server (localhost by default) e.g.
MyDatabaseServer.com

or its IP address, e.g.
192.169.1.2

or its full qualified JDBC connection string, e.g.
jdbc:sap://COMPUTER_NAME_OR_IP:DATABASE_TUNNEL_PORT/?autocommit=false		 STRING   localhost Mandatory
Port The port used by JDBC to connect to the database server (39013 by default for SAP HANA).
This parameter is ignored if the Host parameter is based on a fully qualified JDBC connection string that includes the port.		 NUMERIC   39013  
Databases The subset of database instances to import expressed as a comma (,) or semicolon (;) separated list of databases' names, e.g.
database1; database2

To specify the name of the database you would like to use for authentication, provide its name with this parameter or use SQL LIKE patterns to identify names of databases for import. Review the Schema parameter documentation for further details.

In the second case, the importing user should have permission to the system database "SYSTEMDB".		 STRING      
User The user name used by JDBC to connect to the database server.

This parameter is ignored if the Host parameter is based on a fully qualified JDBC connection string that includes the user name.

Refer to the PERMISSIONS section of this import bridge's main documentation.		 STRING      
Password The user password used by JDBC to connect to the database server. PASSWORD      
Schemas The subset of schemas to import expressed as a semicolon separated list of schemas' names, e.g.
schema1; schema2

This parameter also supports the dot annotation in combination with * wildcards to enable specification of what groups of objects to import, e.g.
database1.schema1; database2.*;

All accessible user schemas are imported if that list is empty.

All system schemas (e.g. SysAdmin) and objects are ignored by default. If system schemas are needed, use the Miscellaneous parameter option -system.objects.import.

Schema name patterns using the syntax rules used by the LIKE operator in SQL:

- Inclusion syntax:
using % or *, e.g.
A%; %B; %C%; D
- start with A or
- end with B or
- contain C or
- equal D

- Exclusion syntax:
using NOT, e.g.
A%; %B; NOT %SYS; NOT 'SYS%'
- WHERE (name like A% or name like %B)
- and (name NOT like %SYS)
- and (name NOT like 'SYS%')

- Special characters:
^ $ * + ? | \ ( ) [ ] { } whitespace
enclose this name in square brackets and escape special characters, e.g.
OneWord%; [Two\sWords.*]; [Dollar\$]		 REPOSITORY_SUBSET      
Tables The subset of "Tables" to import expressed as a semicolon separated list of objects in schemas, like table, view, function, e.g.
table1; table2; view1; function1

This parameter also supports the [database.][schema.]table dot annotation in combination with * wildcards to enable specification of what groups of objects to import, e.g.
database1.schema1.table1; database1.*.table2; database1.schema3.*;

All user objects that the bridge supports are imported if that list is empty.

All system tables (e.g. SysAdmin) and objects are ignored by default. If system tables are needed, use the Miscellaneous parameter option -system.objects.import.

Table name patterns using a SQL like expression syntax:

- Inclusion syntax:
using % or *, e.g.
A%; %B; %C%; D
- start with A or
- end with B or
- contain C or
- equal D

- Exclusion syntax:
using NOT, e.g.
A%; %B; NOT %SYS; NOT 'SYS%'
- WHERE (name like A% or name like %B)
- and (name NOT like %SYS)
- and (name NOT like 'SYS%')

- Special characters:
^ $ * + ? | \ ( ) [ ] { } whitespace
enclose this name in square brackets and escape special characters, e.g.
OneWord%; [Two\sWords.*]; [Dollar\$]

- Calculation views:
The bridge supports import of tables and calculation views together when providing the Database name and schema name using the same expression pattern as described under this parameter.

In order to import all calculation views in the package 'package1.subpackage1', the 'Tables' filter should be, e.g.
h11._SYS_BIC.[package1.subpackage1/.*]

In order to import all of the calculation views in the package 'package1.subpackage1', the 'Tables' filter should be, e.g.
h11._SYS_BIC.[package1.subpackage1/P.*]

In order to import all of the calculation views in all packages, with the name starts with 'P' the 'Tables' filter should be, e.g.
h11._SYS_BIC.[.*/P.*]		 STRING      
Stored procedure details Controls the amount of details imported from stored procedures:

'Signature'
The name and parameters of stored procedures

'Code, signature'
The above plus code

'Lineage, code, signature'
The above plus data lineage derived from the code

'None'
stored procedure details are not included.		 ENUMERATED
None
Signature
Code, signature
Lineage, code, signature
 Signature  
Import indexes Controls the import of Indexes:

'False'
Indexes are not imported

'True'
Indexes are imported		 BOOLEAN
False
True
 False  
Miscellaneous
INTRODUCTION
Specify miscellaneous options starting with a dash and optionally followed by parameters, e.g.
-connection.cast MyDatabase1="MICROSOFT SQL SERVER"
Some options can be used multiple times if applicable, e.g.
-connection.rename NewConnection1=OldConnection1 -connection.rename NewConnection2=OldConnection2;
As the list of options can become a long string, it is possible to load it from a file which must be located in ${MODEL_BRIDGE_HOME}\data\MIMB\parameters and have the extension .txt. In such case, all options must be defined within that file as the only value of this parameter, e.g.
ETL/Miscellaneous.txt

JAVA ENVIRONMENT OPTIONS
-java.memory <Java Memory's maximum size> (previously -m)

1G by default on 64bits JRE or as set in conf/conf.properties, e.g.
-java.memory 8G
-java.memory 8000M

-java.parameters <Java Runtime Environment command line options> (previously -j)

This option must be the last one in the Miscellaneous parameter as all the text after -java.parameters is passed "as is" to the JRE, e.g.
-java.parameters -Dname=value -Xms1G
The following option must be set when a proxy is used to access internet (this is critical to access https://repo.maven.apache.org/maven2/ and exceptionally a few other tool sites) in order to download the necessary third-party software libraries.
Note: The majority of proxies are concerned with encrypting (HTTPS) the outside (of the company) traffic and trust the inside traffic that can access proxy over HTTP. In this case, an HTTPS request reaches the proxy over HTTP where the proxy HTTPS-encrypts it.
-java.parameters -java.parameters -Dhttp.proxyHost=127.0.0.1 -Dhttp.proxyPort=3128 -Dhttp.proxyUser=user -Dhttp.proxyPassword=pass

MODEL IMPORT OPTIONS
-model.name <model name>

Override the model name, e.g.
-model.name "My Model Name"

-prescript <script name>

This option allows running a script before the bridge execution.
The script must be located in the bin directory (or as specified with M_SCRIPT_PATH in conf/conf.properties), and have .bat or .sh extension.
The script path must not include any parent directory symbol (..).
The script should return exit code 0 to indicate success, or another value to indicate failure.
For example:
-prescript "script.bat arg1 arg2"

-postscript <script name>

This option allows running a script after successful execution of the bridge.
The script must be located in the bin directory (or as specified with M_SCRIPT_PATH in conf/conf.properties), and have .bat or .sh extension.
The script path must not include any parent directory symbol (..).
The script should return exit code 0 to indicate success, or another value to indicate failure.
For example:
-postscript "script.bat arg1 arg2"

-cache.clear

Clears the cache before the import, and therefore will run a full import without incremental harvesting.

If the model was not changed and the -cache.clear parameter is not used (incremental harvesting), then a new version will not be created.
If the model was not changed and the -cache.clear parameter is set (full source import instead of incremental), then a new version will be created.

-backup <directory>

Allows to save the input metadata for further troubleshooting. The provided <directory> must be empty.

-restore <directory>

Specify the backup <directory> to be restored.

DATA CONNECTION OPTIONS
Data Connections are produced by the import bridges typically from ETL/DI and BI tools to refer to the source and target data stores they use. These data connections are then used by metadata management tools to connect them (metadata stitching) to their actual data stores (e.g. databases, file system, etc.) in order to produce the full end to end data flow lineage and impact analysis. The name of each data connection is unique by import model. The data connection names used within DI/BI design tools are used when possible, otherwise connection names are generated to be short but meaningful such as the database / schema name, the file system path, or Uniform Resource Identifier (URI). The following option allows to manipulate connections. These options replaces the legacy options -c, -cd, and -cs.

-connection.cast ConnectionName=ConnectionType

Casts a generic database connection (e.g. ODBC/JDBC) to a precise database type (e.g. ORACLE) for SQL Parsing, e.g.
-connection.cast "My Database"="MICROSOFT SQL SERVER".
The list of supported data store connection types includes:
ACCESS
APACHE CASSANDRA
DB2/UDB
DENODO
GOOGLE BIGQUERY
HIVE
MYSQL
NETEZZA
ORACLE
POSTGRESQL
PRESTO
REDSHIFT
SALESFORCE
SAP HANA
SNOWFLAKE
MICROSOFT SQL AZURE
MICROSOFT SQL SERVER
SYBASE SQL SERVER
SYBASE AS ENTERPRISE
TERADATA
VECTORWISE
HP VERTICA

-connection.rename OldConnection=NewConnection

Renames an existing connection to a new name, e.g.
-connection.rename OldConnectionName=NewConnectionName
Multiple existing database connections can be renamed and merged into one new database connection, e.g.
-connection.rename MySchema1=MyDatabase -connection.rename MySchema2=MyDatabase

-connection.split oldConnection.Schema1=newConnection

Splits a database connection into one or multiple database connections.
A single database connection can be split into one connection per schema, e.g.
-connection.split MyDatabase
All database connections can be split into one connection per schema, e.g.
-connection.split *
A database connection can be explicitly split creating a new database connection by appending a schema name to a database, e.g.
-connection.split MyDatabase.schema1=MySchema1

-connection.map SourcePath=DestinationPath

Maps a source path to destination path. This is useful for file system connections when different paths points to the same object (directory or file).
On Hadoop, a process can write into a CSV file specified with the HDFS full path, but another process reads from a Hive table implemented (external) by the same file specified using a relative path with default file name and extension, e.g.
-connection.map /user1/folder=hdfs://host:8020/users/user1/folder/file.csv
On Linux, a given directory (or file) like /data can be referred to by multiple symbolic links like /users/john and /users/paul, e.g.
-connection.map /data=/users/John -connection.map /data=/users/paul
On Windows, a given directory like C:\data can be referred to by multiple network drives like M: and N:, e.g.
-connection.map C:\data=M:\ -connection.map C:\data=N:\

-connection.casesensitive ConnectionName...

Overrides the default case insensitive matching rules for the object identifiers inside the specified connection, provided the detected type of the data store by itself supports this configuration (e.g. Microsoft SQL Server, MySql etc.), e.g.
-connection.casesensitive "My Database"

-connection.caseinsensitive ConnectionName...

Overrides the default case sensitive matching rules for the object identifiers inside the specified connection, provided the detected type of the data store by itself supports this configuration (e.g. Microsoft SQL Server, MySql etc.), e.g.
-connection.caseinsensitive "My Database"

-connection.level AggregationLevel

Specifies the aggregation level for the external connections, e.g.-connection.level catalog
The list of the supported values:
server
catalog
schema (default)

JDBC DATABASE OPTIONS
-system.objects.import (previously -s)

Imports all system objects (that are skipped by default).

-synonyms.ignore (previously -synonyms)

Ignores the synonyms when importing, therefore reducing the size of the model when a large number synonyms exist.

-data.dictionary.server <database identification name> (previously -server.name)

Sets a server name for the data dictionary to use for extracting tables and view definitions.
In a multitenant Container Database (CDB), the metadata for data dictionary tables and view definitions is stored only at the root level. However, each Pluggable Database (PDB) has its own set of data dictionary tables and views for the database objects contained in the PDB. It is possible that some dba_ views are not available because they are not applicable.

-driver.fetch.size <number of rows> (previously -f)

The database driver fetch size in number of rows, e.g.
-driver.fetch.size 100

-model.split (previously -multiModel)

Splits a large database model into multi models (e.g. one schema per model).
Warning: this is a system option managed by the application calling this import bridge and should not be set by users.

-driver.className

The full name (including the package name) of the Java class that implements the JDBC driver interface.

-synonyms.public.old

Duplicates public synonym in all schemes.
 STRING      

 

Bridge Mapping

Meta Integration Repository (MIR)
Metamodel
(based on the OMG CWM standard)		 "SAP HANA Database (via JDBC)"
Metamodel
Jdbc		 Mapping Comments
     
Name Name  
Attribute Table Column  
Comment Comments on the column If JDBC driver supports
InitialValue Default value  
Name Name  
Optional Based on the nullable property For Access databases, set to false only if the attribute is in a Unique Index
PhysicalName Name  
Position Position If position is not provided, the order in which the attributes are retrieved is used.
BaseType Types  
DataType Data Type See datatype conversion array
Length Size  
Name   The name is computed from the datatype
PhysicalName Name  
Scale Maximum scale  
Class Table of type "TABLE"
Comment Comments on the table If JDBC driver supports
CppClassType   Set to ENTITY
CppPersistent   Set to True
Name Name  
PhysicalName Name  
ClassDiagram Schema A class diagram is created for each package and contains all the elements of the package
DerivedType Column Table column, stored procedure column SQL View column or type
DataType Data Type See datatype conversion array
Length Size  
Name   The name is computed from the datatype
PhysicalName Name  
Scale Decimal digits  
UserDefined   True for Type
DesignPackage Schema A Package is created for each retrieved schema. If there is no schema a default package is created.
Name Name Set to "Schema" if there is no schema or the schema has no name.
SQLViewAttribute View Column  
Comment Comments on the column If JDBC driver supports
Name Name  
PhysicalName Name  
Position Ordinal position  
SQLViewEntity Table of type "VIEW"
Comment Comments on the table If JDBC driver supports
Name Name  
PhysicalName Name  
StoreModel Catalog The model is built using the elements contained in the catalog (e.g. the database for MS SQL server)
Name Name Set to "Catalog" if the catalog has no name.
Synonym Table Synonym If JDBC driver supports
Name Name  

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