Model Repository Database Requirements
Before you create a repository, you need a database to store repository tables. Use the database client to create the database. After you create a database, you can use the Administrator tool to create a Model Repository Service.
Each Model repository must meet the following requirements:
- •Each Model repository must have its own schema. Two Model repositories or the Model repository and the domain configuration database cannot share the same schema.
- •Each Model repository must have a unique database name.
In addition, each Model repository must meet database-specific requirements.
Note: The Model Repository Service uses the DataDirect drivers included with the Informatica installation. Informatica does not support the use of any other database driver.
IBM DB2 Database Requirements
Use the following guidelines when you set up the repository on IBM DB2:
- •If the repository is in an IBM DB2 9.7 database, verify that IBM DB2 Version 9.7 Fix Pack 7 or a later fix pack is installed.
- •On the IBM DB2 instance where you create the database, set the following parameters to ON:
- - DB2_SKIPINSERTED
- - DB2_EVALUNCOMMITTED
- - DB2_SKIPDELETED
- - AUTO_RUNSTATS
- •On the database, set the configuration parameters.
The following table lists the configuration parameters that you must set:
Parameter | Value |
|---|
applheapsz | 8192 |
appl_ctl_heap_sz | 8192 |
logfilsiz | 8000 |
maxlocks | 98 |
locklist | 50000 |
auto_stmt_stats | ON |
- •Set the tablespace pageSize parameter to 32768 bytes.
In a single-partition database, specify a tablespace that meets the pageSize requirements. If you do not specify a tablespace, the default tablespace must meet the pageSize requirements.
In a multi-partition database, specify a tablespace that meets the pageSize requirements. Define the tablespace in the catalog partition of the database.
- •Set the NPAGES parameter to at least 5000. The NPAGES parameter determines the number of pages in the tablespace.
- •Verify that the database user has CREATETAB, CONNECT, and BINDADD privileges.
- •Informatica does not support IBM DB2 table aliases for repository tables. Verify that table aliases have not been created for any tables in the database.
- •In the DataDirect Connect for JDBC utility, update the DynamicSections parameter to 3000.
The default value for DynamicSections is too low for the Informatica repositories. Informatica requires a larger DB2 package than the default. When you set up the DB2 database for the domain configuration repository or a Model repository, you must set the DynamicSections parameter to at least 3000. If the DynamicSections parameter is set to a lower number, you can encounter problems when you install or run Informatica services.
For more information about updating the DynamicSections parameter, see
Updating the DynamicSections Parameter of a DB2 Database.
IBM DB2 Version 9.1
If the Model repository is in an IBM DB2 9.1 database, run the DB2 reorgchk command to optimize database operations. The reorgchk command generates the database statistics used by the DB2 optimizer in queries and updates.
Use the following command:
REORGCHK UPDATE STATISTICS on SCHEMA <SchemaName>
Run the command on the database after you create the repository content.
Microsoft SQL Server Database Requirements
Use the following guidelines when you set up the repository on Microsoft SQL Server:
- • Set the read committed isolation level to READ_COMMITTED_SNAPSHOT to minimize locking contention.
To set the isolation level for the database, run the following command:
ALTER DATABASE DatabaseName SET READ_COMMITTED_SNAPSHOT ON
To verify that the isolation level for the database is correct, run the following command:
SELECT is_read_committed_snapshot_on FROM sys.databases WHERE name = DatabaseName
- •The database user account must have the CONNECT, CREATE TABLE, and CREATE VIEW privileges.
Oracle Database Requirements
Use the following guidelines when you set up the repository on Oracle:
- •Verify that the database user has the CONNECT, RESOURCE, and CREATE VIEW privileges.
- •Informatica does not support Oracle public synonyms for repository tables. Verify that public synonyms have not been created for any tables in the database.