|Oracle Spatial User's Guide and Reference
Part Number A88805-01
This appendix provides information concerning installation, compatibility, and migration between various Oracle Spatial product releases.
You must upgrade both the database server and Spatial at the same time if you wish to use older spatial applications with an Oracle9i release of Spatial. Spatial must always be synchronized with the Oracle9i database server on upgrade or downgrade. In both cases, Spatial must be reinstalled.
Many of the Spatial release 9i features depend on new features in release 9i of the database server. Therefore, there are compatibility and migration issues that need to be addressed in this release of Spatial. This appendix outlines the database and application compatibility issues.
An upgrade or downgrade of the database server version requires a corresponding upgrade or downgrade of Spatial. If an Oracle8i (8.1.5, 8.1.6, or 8.1.7) database server is upgraded to an Oracle9i database server, Spatial must also be upgraded. Similarly, if an Oracle9i database server is downgraded, Spatial must be downgraded too. Lastly, if an Oracle9i database server is running in Oracle8i compatibility mode, features that are new for Spatial in release 9.0.1 (Oracle9i) will not work.
This section applies to new users of Oracle Spatial. If you are upgrading from a previous release of Spatial, see Section A.4 for migration information.
When you install Oracle release 9.0.1, the option to install Spatial is preselected by default. If you accept this default, you do not need to perform the installation steps described in this section, because the MDSYS user is already created and locked automatically.
If you create an Oracle database using the Database Configuration Assistant (DBCA), Spatial is installed by default and you do not need to perform the installation steps described in this section.
If you did not select the option to install Spatial at installation time and you want to install Spatial later, follow these steps.
Installation of Spatial for release 9.0.1 requires that the COMPATIBLE init.ora parameter is set to 126.96.36.199.0 or higher. This is required for the creation and definition of Spatial index types and operators. Thus, if the database was created with a compatibility parameter value of 8.n.n.n.n, the DBA must shut down the database and restart with COMPATIBLE=9.0.n.n.n.
After you install Spatial, it is strongly recommended that you lock the MDSYS user. The MDSYS user is created with administrator privileges; therefore, it is important to protect this account from unauthorized use. To lock the MDSYS user, connect as SYS and enter the following command:
If Spatial has been installed and the database compatibility needs to be reset to 8.1.n.n.n from 9.0.n.n.n, enter the following while connected as SYSTEM:
ALTER DATABASE RESET COMPATIBILITY SHUTDOWN <Change the init.ora parameter COMPATIBLE=188.8.131.52.0> STARTUP
Note that performing this operation disables function-based spatial indexing and partitioning support for spatial indexing.
If you are upgrading from Spatial release 8.1.5, 8.1.6, or 8.1.7 to Spatial for release 9i, and if you have not chosen the automatic upgrade option, perform the following steps to migrate to Spatial for release 9i.
If you have linear referencing system (LRS) data, you must perform the steps in Section A.5 regardless of whether or not you chose an automatic upgrade.
If you have linear referencing data (that is, geometries with measure information), you must migrate that data to the Spatial release 9.0.1 format, as follows:
This could be the third or the fourth dimension, depending on the dimensionality of the data. For example, if the data has 3 dimensions (such as X, Y, and height), the LRS geometry object is 4D, and the LRS dimension in this case is usually 4.
Example 1: The LRS dimension is 3 for the geometries in the GEOMETRY column of table LRS_DATA. Update the SDO_GTYPE as follows:
Example 2: The LRS dimension is 4 for the geometries in the GEOMETRY column of table LRS_DATA. Update the SDO_GTYPE as follows: