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39 43
1.
ISSN: 2277 –
9043 International Journal of Advanced Research in Computer Science and Electronics Engineering Volume 1, Issue 5, July 2012 A Compression Algorithm for Optimization of Storage Consumption of Non Oracle Database Abha Tamrakar, Vinti Nanda data. Relational database can be protected in several different Abstract—Relational database are very important in ways. Like Oracle uses compression algorithm which satisfying today’s information needs. This paper aims at provide security and optimizes storage space for its database. optimization of storage consumption of non oracle database Heterogeneous data access is a problem that affects a lot of with the table compression algorithm of oracle 11g. Many companies. A lot of companies run several different database concepts have been developed for compressing of relational systems. Each of these systems stores data and has a set of database. But no concepts ever talked about the technique of applications that run against it. Consolidation of this data in compression of non oracle database with in the oracle one database system is often hard in large part because many environment. This paper discusses the use of OLTP Table of the applications that run against one database may not have compression algorithm given by ORACLE 11g which an equivalent that runs against another. Until such time as optimizes the storage consumption. But the challenges are migration to one consolidated database system is made faced by organizations when running several different feasible, it is necessary for the various heterogeneous databases and utilizing the heterogeneous services of the database systems to interoperate. same. Data that are stored in non oracle system cannot be Oracle Transparent Gateways provide the ability to compressed by OLTP table compression algorithm given by transparently access data residing in a non-Oracle system Oracle 11g which reduces its size approximately about 70% from an Oracle environment. This transparency eliminates ,so instead of migrating database system and loading the the need for application developers to customize their content of non oracle database system like SQL SERVER in applications to access data from different non-Oracle ORACLE DATABASE format which is totally a wastage of systems, thus decreasing development efforts and increasing time one can use oracle transparent gateway which is based the mobility of the application. Applications can be on heterogeneous services technology. Oracle Transparent developed using a consistent Oracle interface for both Oracle Gateways provides the ability to transparently access data and Microsoft SQL Server. residing in a non-oracle system from an oracle environment. As a database administrator with multiple databases to After configuring the non oracle database in oracle manage, one should have the responsibility to make environment and the relational database can be compressed information available when and where it is needed and use by the table compression algorithm of oracle 11g. the services provided by ORACLE in the non oracle database system like SQL SERVER As organizations expand, it becomes increasingly important Index Terms—Oltp Table Compression Algorithm, for them to be able to share information among multiple Oracle 11g, Oracle Transparent Gateway, Sql Server. databases and applications. Data replication and integration enables us to access information when and where it is needed in a distributed environment. Oracle Database provides secure and standard mechanisms that enable communication I. INTRODUCTION between databases, applications, and users. These mechanisms include queues, data replication, messaging, and The rapidly growing internet and related technologies has distributed access in both homogeneous and heterogeneous offered an unprecedented accessibility and redistribution of environments. If these organizations might prefer to centralize this data, at least in the short term, it might not be Manuscript received July, 2012. First Author name Computer Science and Engineering, Chhattisgarh possible. These organizations must have a method of Swami Vivekananda Technical University, Raipur, India, 09993844951, accessing these distributed data sources as if they were a (e-mail: tamrakar.abha@gmail.com). single, centralized database. Using distributed SQL, Second Author name, Computer Science and Engineering, Chhatrapati applications and users can access and modify information at Shivaji I institute of Technology, Bhilai, India, 09907142531., (e-mail: vintinanda@csitdurg.in). multiple Oracle or non-Oracle databases as if it resided in a single Oracle database. Because information does not need to . 39 All Rights Reserved © 2012 IJARCSEE
2.
ISSN: 2277 –
9043 International Journal of Advanced Research in Computer Science and Electronics Engineering Volume 1, Issue 5, July 2012 be moved or copied, using distributed SQL to federate their compression/decompression is performed at the tuple-level, distributed data sources provides organizations with the which is desirable for integrating the compression technique fastest, and easiest, path to information integration. If into database systems. They showed that it is hard to compute information is later moved, then it is not necessary to rewrite an optimal compression solution. Therefore, an iterative an application. This is especially useful for organizations that greedy compression framework is offered to solve this are transitioning to a consolidated approach, but need a problem. This work primarily focuses on the underneath method for accessing the distributed data now. component of the compression framework, that is to For example, by using distributed SQL with the appropriate efficiently find dependency patterns in relational data to Oracle Database Gateway, applications can access legacy optimize the compression ratio. The experimental results on data immediately, without waiting until it can be imported several real-life datasets demonstrate the effectiveness of into an Oracle Database. Distributed SQL is also useful to their approach, as well as the efficiency and scalability. organizations that want to perform ad hoc queries or updates on infrequently accessed data that is more appropriately M. Attalla and S. Lonardi [4] proposed a system, in which a located elsewhere. simple variation on the classic LZ-77 algorithm that allows Information about accessing and modifying information in one to hide, within the compressed document, enough multiple databases can be using Distributed SQL information to warrant its authenticity and integrity. The Distributed SQL enables applications and users to query or design is based on the unpredictability of a certain class of modify information in multiple databases with a single SQL pseudo-random number generators, in such a way that the statement. Because distributed SQL masks the physical hidden data cannot be retrieved in a reasonable amount of location of your data, you can change the location of your time by an attacker (unless the secret bit-string key is known data without changing our application. Distributed SQL (2003). includes the following: distributed queries (which access data) and distributed transactions (which modify data). Automatic relational database compression scheme design In distributed transactions, the two-phase commit mechanism based on swarm evolution by Tian-lei Hu, Gang Chen, guarantees the integrity of your data by ensuring that all Xiao-yan Li and Jin-xiang Dong[3] presented a model with statements in a transaction either commit or roll back as a unit novel techniques to integrate a rapidly convergent at each database involved in the distributed transaction. agent-based evolution framework, i.e. the SWAF (Swarm When an application or user tries to commit a distributed Algorithm Framework), into adaptive attribute compression transaction, the database to which the application or user is for relational database. The model evolutionally consults connected is called the global coordinator. The global statistics of CPU load and IO bandwidth to select coordinator completes the two-phase commit by initiating the compression schemas considering both aspects of the following phases: trade-off. They have implemented a prototype model on Oscar RDBMS with experiments highlighting the correctness Prepare Phase: The global coordinator asks the other and efficiency of our techniques. databases involved in the distributed transaction to confirm that they can either commit or roll back the transaction, even High Performance SQL Queries on Compressed Relational if there is a failure. If any database cannot complete the Database by Tian-lei Hu, Gang Chen, Xiao-yan Li and prepare phase, then the transaction is rolled back. Jin-xiang Dong, [2]. They have developed a disk-based Commit Phase: If all of the other databases inform the global compression architecture, called DHIBASE, to support large coordinator that they are prepared, then the global database and at the same time, perform high performance coordinator commits the transaction and asks all of the other SQL queries on single or multiple tables in compressed form. databases to commit the transaction. They have compared their system with widely used Oracle Database Gateway enables Oracle databases to access Microsoft SQL Server. Their system performs significantly and modify data in a number of non-Oracle databases, better than SQL Server in terms of storage requirement and including Sybase, DB2, Informix, Microsoft SQL Server, query response time. DHIBASE requires 10 to 15 times less Ingres, and Teradata databases. This access is completely space and for some operation it is 18 to 22 times faster. As the transparent to the end user. That is, one can issue the same system is column oriented, schema evolution is easy. SQL statements regardless of whether we are accessing data in an Oracle database or a non-Oracle database. But the above proposed method does not provide as much The data that is stored in SQL SERVER database cannot be space consumption as that of oracle 11g table compression compressed by OLTP table compression algorithm of Oracle algorithm. So our paper uses the particular algorithm which 11g but by using ORACLE TRANSPARENT GATEWAY it provides more than 50 % of storage savings. is possible to facilitate the feature oracle database to non oracle database like SQL SERVER. II. Literature Survey Lossless Semantic Compression for Relational Databases by III. OUR APPROACH Haiming Huang [5] Renmin University of China, Beijing, In our approach we have used oracle transparent gateway to P.R.China, 1998 proposed a semantic compression technique make non oracle database like SQL server database that exploits frequent dependency patterns embedded in the compatible with oracle and hence reduce the size of it by relational table. One advantage of this approach is that using OLTP table compression algorithm of Oracle 11g. All Rights Reserved © 2012 IJARCSEE 40
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9043 International Journal of Advanced Research in Computer Science and Electronics Engineering Volume 1, Issue 5, July 2012 B. Compression SQL Database Moved To Oracle Database Compressed By Fig 2.Steps Involved in OLTP Table Compression Process [1] C. The advantages of OLTP Table Compression Algorithm Table Compression are: Algorithm by Oracle Block Fig 1. 11g •Structured/Relational data Compression. •Unstructured data compression Fig. 1 Block Diagram of the proposed system •Compression for backup data •Network transport compression The following steps are involved in our approach:- •Reduces resource requirements and costs. a. Compatibility of non oracle database system to oracle •Storage System environment •Network Bandwidth b. Compression: The OLTP table compression algorithm •Memory Usage given by Oracle 11g is for compressing the relational database table of sql server. A. Algorithm 1. Create a relational table in the non oracle database like SQL problem. server. 2. Make the listener. 2.3 Start it compatible with oracle through Oracle 2.4 If the listener is started successfully then create a link Transparent Gateway; between non oracle database and 2.1 Configure the listener. oracle. 2.2 Check the status of listener; if it’s successful then 2.5 Bringthe next step else diagnose the problem go for the non oracle database to oracle 2.3 Start the listener. 2.4 If the listener is started successfully then create a link between non oracle database and oracle. 2.5 Bring the non oracle database to oracle 3. Compress the non oracle database with the table compression algorithm of oracle 11g. Fig 3.OLTP Table Compression Technique[1] 41 All Rights Reserved © 2012 IJARCSEE
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9043 International Journal of Advanced Research in Computer Science and Electronics Engineering Volume 1, Issue 5, July 2012 Fig 4. Free Space available after applying OLTP Table Compression Algorithm [1] Fig 7. Compression for Tables having 5 columns The following three graphs show the percentage of compression for different number of rows with tables having column 3, 4 and, 5. The figure shows the percentage of compression increases with the increase in the rows of table more effectively as compared to the number of columns. IV. CONCLUSION The compression technique used in our approach compresses relational database of non oracle database like SQL Server through the OLTP Table compression algorithm of Oracle 11g using Oracle Transparent Gateway. Since, we Fig 5. Compression for Tables having 3 columns are using Table compression algorithm given by oracle 11g but the data is in SQL Server we have to make it compatible with the oracle system which is done through oracle transparent gateway then we can use the compression algorithm of oracle. ACKNOWLEDGMENT I would like to thank Ms. Vinti Nanda, Asst. Professor in CSIT, Durg (C.G) for her cooperation, guidance to make us enthusiastic. Secondly I would also like to express my sincere thanks to Mrs. Tripti Sharma, Head of department of Computing Science and Engineering, CSIT, Durg (C.G) for her continuous efforts in encouraging and guiding us to become successful engineers. REFERENCES [1]http://www.oracle.com/technetwork/database/focus-areas/storage/advanc ed-compression-whitepaper-130502.pdf Fig 6. Compression for Tables having 4 columns [2]. Mohammad Masumuzzaman Bhuiyan, Abu Sayed Md. Latiful Hoque, High Performance SQL Queries on Compressed Relational Database, JOURNAL OF COMPUTERS, VOL. 4, NO. 12, DECEMBER 2009. All Rights Reserved © 2012 IJARCSEE 42
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9043 International Journal of Advanced Research in Computer Science and Electronics Engineering Volume 1, Issue 5, July 2012 [3].Tian-lei Hu, Gang Chen, Xiao-yan Li and Jin-xiang Dong, Automatic relational database compression scheme design based on swarm evolution, Journal of Zhejiang University - Science A Volume 7, Number 10 (2006), 1642-1651 [4] M. Attalla and S. Lonardi. “Authentication of LZ-77 Compressed Data.” In Proceedings of the ACM Symposium on Applied Computing, Florid, (2003) [5]. Haiming Huang, Lossless Semantic Compression for Relational Databases, B.E., Renmin University of China, Beijing, P.R.China, 1998. ABHA TAMRAKAR: I received my B.E in Computer Science and Engineering from Shri Shankaracharya College of Engineering and Technology of Chhattisgarh State, India in 2009. I am now Pursuing my M.Tech at Chhattrapati Shivaji Institute of Technology State, India. My area of interest includes compression, security, image processing. VINTI NANDA: She received her M-TECH in Computer Science and Engineering from Rungta College of Engineering and Technology of Chhattisgarh State, India in 2010.She received her B.E in Computer Science and Engineering from Shri Shankaracharya College of Engineering and Technology of Chhattisgarh State, India in 2006.She is working as Asst. Professor in Chhattrapati Shivaji Institute of Technology(CSIT), DURG(C.G) 43 All Rights Reserved © 2012 IJARCSEE
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