Oracle DBA Services


Oracle Database Technical Services

Oracle Database 12c Enterprise Edition delivers industry leading performance, scalability, security and reliability on a choice of clustered or single-servers running Windows, Linux, and UNIX. It provides comprehensive features to easily manage the most demanding transaction processing, business intelligence, and content management applications.


Oracle (8i, 9i, 10g, 11g, 12c) Database Migrate and Upgrade

Do you need to upgrade your database server to a newer version? Do you want to take advantage of new features that helps your business needs or solves a problem? If you are considering launching a data server upgrade initiative or want to ensure the success of a current upgrade initiative, consider Croyant certified Oracle DBA upgrade team services. We can handle all aspects of your Oracle database upgrade on AIX, HP-UX, Solaris, Linux or Microsoft Windows dealing with all Oracle versions and releases of the following;

Oracle 12c Enterprise or Standard Edition – building on Oracle’s unique ability to deliver Grid Computing, 12c gives Oracle customers the agility to respond faster to changing business conditions, gain competitive advantage through technology innovation, and reduce costs.

Oracle 12c Enterprise or Standard Edition (all versions, releases, and platforms) – the first database designed for grid computing, the most flexible and cost-effective way to manage enterprise information. It cuts costs of management while providing the highest possible quality of service.

  • Reduces the costs of managing the IT environment
  • Simplified install, greatly reduced configuration, and management requirements.
  • Automatic performance diagnosis and SQL tuning.
  • Improve DBA and developer productivity and efficiency.

Oracle Database Performance Tuning

Poor SQL statement performance and high CPU usage on your Oracle database server can cripple your business operations that depend on quick and reliable data access. Slow SQL processing almost always indicates the need for performance tuning. We will analyze your pain points and make recommendations on your Oracle database configuration, memory settings, and storage architecture. We will also analyze poor performing SQL statements that may benefit from the correct index, syntax, and optimizer settings. Our DBA engineers use Oracle’s performance monitoring and reporting utilities (AWR, ASH, etc.) to determine what resource bottlenecks are negatively affecting performance. These efforts can be performed against specific targets or as part of a Health Check for your Oracle database.

The Oracle database management system is the most flexible and sophisticated. Its ability to provide performance views for memory management components of the database is an invaluable tool especially for managing DSS systems. With it, Croyant DBA’s can more easily ensure that all the settings for Oracle memory utilization are optimal for their applications. Allocating memory on your Oracle database server requires an initial analysis of available memory resources to arrive at realistic targets. We can make recommendations on how to divide your available memory into the buffers where the Oracle database will employ it best. Memory buffer requirements like the system global area, shared pool, JAVA pool, large pool, and process global area will be considered and analysed.

Is your server configured to support optimal performance? Have you considered using Oracle Streams for distributed processing or Oracle Real Application Clusters for parallel processing? How many engines are available and is the current number of online engines producing the best result? Our assessment can show you where improvements in your server configuration such as memory, engine, network, and other configuration options can make your server perform optimally for the lifecycle of your system.

Are you ready to get out from under the 32 bit memory limits for Oracle? If you are planning a version upgrade or just want to take advantage of your 64 bit AIX, HP-UX, Solaris, Linux or Microsoft Windows operating system, we can help you upgrade your Oracle instance to take advantage 64 bit architecture available on Linux, UNIX and Windows.

A Critical Patch Update is a collection of patches for multiple security vulnerabilities. It also includes non-security fixes that are required (because of interdependencies) by those security patches. Critical Patch Updates are cumulative, but each advisory describes only the security fixes added since the previous Critical Patch Update. Thus, prior Critical Patch Update Advisories should be reviewed for information regarding earlier accumulated security fixes. Due to the threat posed by a successful attack, Oracle strongly recommends that customers apply fixes as soon as possible. Croyant DBAs can assist you in understanding which Critical Patch Updates are needed and then with the planning and application of those patches to your Oracle environment.

Do you sometimes doubt if you are getting the most out of your Oracle database running on AIX, HP-UX, Solaris, Linux or Microsoft Windows? Our Oracle RDBMS Health Check service will provide you with exactly what you need. We do a deep analysis of your database workload, environment, database configuration, and resource intensive code to provide you an easy to read, management level report with the current state of your system and any recommendations to improve its performance and availability.

Users may encounter errors when using the Oracle database. Xtivia certified Oracle DBA engineers will help you to analyze whether it is server critical or informational. We’ll find the root cause of the problem and take any measures to fix the error. Our team works quickly to get your systems back to normal operation.

Croyant can help you reduce the cost of protecting data by using Oracle’s many layers of security to insure data protection against unauthorized access and corruption. Regulations such as Payment Card Industry (PCI) Data Security Standard (DSS), Health Insurance Portability and Accountability Act (HIPAA), Sarbanes-Oxley (SOX), Gramm-Leach-Bliley Act (GLBA) and like global regulations call for separation-of-duties and other preventive measures to ensure data privacy and data integrity. Effective security measures are attained through Oracle Vault.

Oracle Database Vault helps you address the most difficult security problems remaining today: protecting against the insider threats, meeting regulatory compliance requirements, and enforcing separation of duty.
It provides a number of flexible features that can be used to apply fine-grained access control to your sensitive data. It hardens your Oracle Database instance and enforces industry standard best practices in terms of separating duties from traditionally powerful users. Most importantly, it protects your data from super-privileged users but still allows them to maintain your Oracle Databases. Oracle Database Vault can become an integral component of your enterprise.
Data security has become a big topic today. By the principle of least privilege, a user should only have access to the bare minimum of resources required to do whatever it is the user needs to do. Let our certified Oracle DBA engineers help you create, prepare, implement and monitor a security plan that will ensure the integrity of your data no matter what the threat.

Have you ever thought of utilizing Oracle database auditing to detect penetration of the system and misuse of the resources? Croyant certified Oracle DBA engineers can assess your business needs, plan and install the audit system, configure auditing options, set up audit trails and threshold procedures and process the audit data.

Certified Oracle engineers have deep experience of managing Oracle Replication from 8i to 12c handling various types of Oracle Replication such as Streams, Advanced Replication, Data Guard, and Oracle Real Application Clusters (RAC). Data availability is an important factor to the success of any businesses.
In a distributed environment, Oracle Streams improves data availability and accessibility by sharing and replicating information to multiple sites quickly and reliably. Oracle Streams was introduced in Oracle 9i and is used to perform data replication, data warehouse transformation and messaging.
Created as a disaster recovery solution, Oracle Data Guard is also a solution for High Availability. It can be used to replicate and maintain production databases to alleviate reporting job traffic on the server. Data Guard can be configured for real-time consistency between the production database and one to as many as nine standby databases or, delayed by a set time to allow the standby to become a snapshot standby. Data Guard becomes especially useful for testing and rolling upgrades and can be configured as either a physical (Redo-Apply) or logical (SQL-Apply). Each has its advantages and inherent flexibility.
Oracle Real Application Clusters (RAC) is an option of Oracle Databases. Oracle RAC is a cluster database with a shared cache architecture that overcomes the limitations of traditional shared-nothing and shared-disk approaches to provide highly scalable and available database solutions for all business applications. Oracle RAC is a key component of Oracle enterprise grid architecture.
Most users of Oracle RAC employ a two node cluster to insure always available service to its user community. The two node configuration offers the flexibility needed to perform maintenance, upgrades, and patching without interfering with user activity.

Does your backup strategy match your business needs? Are you backing up frequently enough to prevent a large data loss? We can help you design a backup and recovery strategy that matches your needs to protect your data as well as providing you recovery with minimum downtime. Croyant can assist with the implementation of your backup and recovery strategy using various methods including Export/Import, Cold or Off-line Backups, Hot or On-line, and Recovery Manager (RMAN). It is often advisable to use more than one of these methods to backup your database. Does your organization also backup all required parameter files, software libraries, password files, etc? Your organization may also need to backup archived log files if your database is in ARCHIVELOG mode. Croyant DBAs can work with you to design, plan, implement and test all the backup and recovery strategies you need to have in place.