CHAPTER 7 Troubleshooting

If you think the upgrade failure or its cause may have damaged your databases, restore the databases from backups. For information on restoring databases, see the System Administration Guide.

If you are concerned about the possible corruption of your databases, exit Server Config, but do not attempt to restart the upgrade session until you have restored the databases from backup. After restoration is complete, retry the upgrade.

Re-running the upgrade

Failures while upgrading a server installation fall into one of two categories: failure to upgrade an individual database, or failure to complete configuration changes after all databases have been upgraded.

1If an individual database fails to upgrade, you can retry that upgrade manually. Begin by correcting the problem that caused the failure. Output from the upgrade utility should identify the problem. The most common cause of failure is running out of some resource: space (either data or log), locks, auxiliary scan descriptors. You can add space to the database using the alter database command. Other resource failures may be correctable by changing the server’s configuration via the sp_configure stored procedure.

If an upgrade failure leaves a database offline, and the failure can only be corrected by making data changes in the database, you can gain access to the failed database by using isql or a similar program to connect to the affected server as user “sa” and issuing this command:

dbcc traceon(990)

Note This trace flag grants access only to user “sa”. It is not sufficient to use an account having “sa_role”. If you have disabled the “sa” login, you must re-enable it to get access using this method.

Having set this trace flag, user “sa” can now use the offline database and make the necessary changes to correct the upgrade failure.

To restart a failed upgrade, use the online database command:

online database <failed_db_name>

The server restarts that database’s upgrade from the point of failure.

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Sybase 15.0.2 manual Re-running the upgrade, 107
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15.0.2 specifications

Sybase 15.0.2, a product of the Sybase corporation (now SAP), is a relational database management system (RDBMS) that provides robust solutions for data management, security, and performance. This version builds upon its predecessors, offering improved features and enhancements that cater to both enterprises and developers.

One of the standout features of Sybase 15.0.2 is its advanced performance capabilities. The version introduces optimization enhancements such as the Query Optimizer, which is designed to ensure efficient execution of complex queries. This optimizer analyzes SQL statements and tables to choose the most efficient means of retrieval, thus reducing execution time and improving the overall performance of the database.

Sybase 15.0.2 supports improved scalability, allowing organizations to handle increased workloads without significant changes to their infrastructure. This scalability is crucial for businesses experiencing growth, as it ensures that performance remains consistent and reliable.

Another notable characteristic is the robust security architecture integrated within Sybase 15.0.2. The system includes features like data encryption, user authentication, and authorization mechanisms, making it suitable for environments that handle sensitive information. Database administrators can implement fine-grained access controls to manage user permissions effectively.

Moreover, Sybase 15.0.2 boasts support for a wide range of programming languages and frameworks. This versatility allows developers to build applications using their preferred tools, promoting productivity and ease of integration into existing systems. The database management system also supports various platforms, including Windows and UNIX, enabling diverse deployments across different environments.

In addition to these technological enhancements, Sybase 15.0.2 emphasizes data integrity through its robust transaction management system. It implements the ACID properties (Atomicity, Consistency, Isolation, Durability) to ensure that all database transactions are processed reliably, thereby maintaining the integrity of data even in high-transaction scenarios.

In conclusion, Sybase 15.0.2 is a feature-rich RDBMS that combines performance, scalability, security, and flexibility. Its advanced capabilities not only enhance data management for organizations but also provide a solid foundation for developers seeking to create efficient and secure applications. The improvements in this version make it a compelling choice for enterprises looking to optimize their database operations in an increasingly data-driven world.
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