informix dba

Improve concurrency and locks so that more users can access data faster.From the Chinese version of IBM database magazine. A very important but often overlooked Performance Tuning step is to check how Informix Dynamic Server (IDS) handles locks and concurrency. In my advanced Informix Performance Tuning course, tuning locks are one of the five important steps to improve performance. Number of locks

Improve concurrency and locks, allowing more users to access data faster. From IBM Database Magazine Chinese version. One important, but often overlooked, performance tuning step is to check how Informix Dynamic Server (IDS) handles locks and concurrency. In the Advanced Informix Performance Tuning course that I teach, tuning locks is one of the five important steps to improve performance. Number of Locks W

[{buffered}] [-ANSI] [-CI][{-I -D: Specifies the storage space for Database Import. The default value is the root database space.-L: Specifies the log record method for Database Import.-I: the parent directory of the directory where the database mode files and data files are located(The dbexport tool creates a database. Exp directory to store database mode files and data files under the directory specified by the-O parameter. dbimport requires the directory where database. Exp is located)For ot

, toupper ($3)} '> t_test2.dat' Ctl_file = "./t_test2.ctl" # Generate warehouse receiving configuration Make_loader "t_test2" "./t_test2.dat" "," "3 "; # Execute warehouse receiving Start_loader "./t_test2.bad" "./t_test2.log "; } # -------------------- Main program -------------------- Run; 4.3. Running results and analysisTest @ dwserver:/home/test/SGY $ LS-l Total 4 -Rwxr-XR-x 1 testtest 2683 05-04 14:37 test. Sh Test @ dwserver:/home/test/SGY $./test. Sh -------- run test. Sh Select user_na

Oracle basic concepts and comparison with informix I. ConceptsUser: informix directly uses the user management system of the operating system. Generally, root and informix are used as super operators to manage other users. Oracle has its own user management SYSTEM. It generally uses SYS and SYSTEM as super operators to manage other users.Instance: It is composed

omitted.Run oninit to test whether the instance is started successfully.Use the onmode-ky command to test whether the function is disabled successfully) 3. Create a database spaceRun when the database is not started$ Onspaces-c-d cifdbs-p "/bank/informix/data/cifdbs"-o 100-s 512000$ Onspaces-c-d migdbs-p "/bank/informix/data/migdbs"-o 100-s 1024000$ Onspaces-c-d cmsdbs-p "/bank/

Operating System: Red Hat Enterprise LinuxServer release 5.5 Informix version: Informix_Ultimate_11.70.UC3_LIN_x86_32_FixPack.tar Write the local IP address and hostname to/etc/hosts. 1. Create informix users and groups [Root @ informix ~] # Groupadd-g 1000 informix [Root @ informi