Sap Se

Cj Cheiljedang Corporation

Sung Gun Lee

Sanghee Lee

Hyung Jo Yoon

Boyeong Jeon

JunGyoung Seong

Jaeyeon Won

Hye Won Kim

Young Lyeol Yang

Jun Ok Moon

Kyoung Min Lee

Hye Won Um

Su Jin Choi

Hong Xian Li

Jinseung Park

Hye Min Park

Seon Hye Kim

Hyo Hyoung Lee

Han Hyoung Lee

Hyun Ae Bae

Min Gyeong Kang

Kyungsu Na

Jinwoo Jeon

Hyun-jung Bae

So Yeon Hong

Boyeong Jeong

The present disclosure relates to a polypeptide having an acyltransferase activity or a microorganism including the same; a composition for preparing N-acetyl-L-methionine, the composition including the polypeptide or microorganism; and a method of preparing N-acetyl-L-methionine using the polypeptide or microorganism. Further, the present disclosure relates to a polynucleotide encoding the polypeptide and an expression vector including the polynucleotide. Since the microorganism including a novel acyltransferase according to the present disclosure has enhanced acyltransferase activity, this microorganism can be efficiently used for producing N-acetyl-L-methionine by acetylating L-methionine.

Methods for preparing N-acetyl-L-methionine

A method for intelligent query plan cache size management can be implemented. During execution of a plurality of incoming queries in a database management system, the method can measure actual compilation times of generating query execution plans for the plurality of incoming queries. The database management system can have a query execution plan cache which has a size that can store at least some of the query execution plans. The method can monitor differences between the actual compilation times and ideal compilation times of generating query execution plans for the plurality of incoming queries. The ideal compilation times can be estimated by assuming no query execution plan is evicted from the query execution plan cache. The method can adjust the size of the query execution plan cache based on the monitored differences.

Intelligent query plan cache size management

A computer-implemented method can measure query locality during execution of a plurality of incoming queries in a database management system. The database management system includes a query execution plan cache which has a size that can store at least some of query execution plans generated for the plurality of incoming queries. Based on the measured query locality, the method can adjust the size of the query execution plan cache.

According to some embodiments, a system to manage a query plan cache for a Database Management System ('DBMS') includes a DBMS query plan cache data store. The DBMS query plan cache data store may contain, for example, electronic records representing a plurality of query plans each associated with a set of instructions created in response to a query previously submitted by a user. A DBMS query plan cache management platform may then calculate a utility score for each query plan in the DBMS query plan cache data store. At least one query plan may be evicted from the DBMS query plan cache data store based on the calculated utility score, wherein the evicting is not based on a size of the DBMS query plan cache.

Database management system query plan cache management

The present disclosure relates to a putrescine-producing microorganism of the genus, and a method of producing putrescine using the same.

Putrescine-producing microorganism and method of producing putrescine using the same

The present invention relates to a microorganism of the genus, which has an enhanced activity of aspartate ammonia-lyase and/or aspartate aminotransferase, and thus has an enhanced ability to produce L-arginine, and to a method of producing L-arginine using the microorganism of the genus

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Seoul, South Korea

Sung Gun Lee