Installing TOra 1.3.18 & Qt 3.3.5 on CentOS 4.1 (RHEL 4 U1) box running Oracle 10g R2
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The version of glibc provided with CentOS 4.1 performs additional internal sanity checks to prevent and detect data corruption as early as possible. By default, should corruption be detected, a message similar to the following will be displayed on standard error (or logged via syslog if stderr is not open):
*** glibc detected *** double free or corruption: 0x0937d008 ***
By default, the program that generated this error will also be killed; however, this (and whether or not an error message is generated) can be controlled via the MALLOC_CHECK_ environment variable. The following settings are supported:
0 Do not generate an error message, and do not kill the program
1 Generate an error message, but do not kill the program
2 Do not generate an error message, but kill the program
3 Generate an error message and kill the program
If MALLOC_CHECK_ is explicitly set a value other than 0, this causes glibc to perform more tests that are more extensive than the default, and may impact performance.Should you have a program from a third party ISV that triggers these corruption checks and displays a message, you should file a defect report with the application's vendor, since this indicates a serious bug.