oracle dump function

Differential backup: Back up data based on full backup. Because the tar command cannot implement differential backup, this article explains how to use the dump and restore commands. Of course, the dump and restore commands can also implement full

Oracle Common Dump command Memory Dumps 1). Global Area ALTER session SET The EVENTS ' immediatetrace name Global_area level n '; 1 contains PGA 2 contains SGA 4 contains UGA 8 contains indrect memory 2). Library Cache ALTER session SET The EVENTS '

When the database has a serious performance problem or hang, the server side Sqlplus also can not connect, at this time if you want to get the current state information of the database, in order to diagnose afterwards, then we very much need to

SystemState Dump introduction by janezhang-oracle on December 13, 2012When a database has a serious performance problem or hang, we are very much in need of systemstate dump to know what the process is doing, waiting for what, who is the resource

1. Enable core dump In Linux, core dump files are not generated by default. $ Ulimit-C Check the coredump file size. Generally, the starting value is 0, indicating that the kernel dump is invalid. $ Ulimit-C unlimited // do not limit the size of the

Problem:1. How are data types such as number, Char, varchar, and date stored in Oracle? What is a byte stream?2. What is the length of the byte used by various data types? Select dump (1), dump (123456), dump (-123456), dump (1234567890123456) --

Commands for dump files include exp/IMP and expdp/impdp. These four commands have been compiled in related articles.   Oracle exp/IMP description Http://blog.csdn.net/tianlesoftware/article/details/4718366   Comparison between exp/IMP and

Guide: Oracle Common Dump command, record for future reference I. Memory dumps 1). Global Area ALTER session SET EVENTS ' immediate trace name Global_area level n '; 1 contains PGA 2 contains SGA 4 contains UGA 8 contains indrect memory 2). Library

When there are serious performance problems or hang in the database, we need to systemstate dump to know what the process is doing, what is waiting for, who is the resource holder, and who is blocking the others. In the case of these problems,

Description of how Oracle extracts DDL statements from the Dump file Description of how Oracle extracts DDL statements from the Dump file Commands for Dump files include exp/imp and expdp/impdp. These four commands have been compiled in related