RAC Debug switch modification Tool

Oracle RAC is a complex task with many processes and components. Each process writes its own log file.

There are some switches for these log files to control the details of the written information. These switches are not provided in the Oracle document CD. There are roughly three ways to modify these switches:

1. modify the configuration file

2. Modify Environment Variables

3. Set the debug level for each component.

The following describes each and third methods. The attachment script automates the third method. You only need to use the following methods to modify the debug switch:

Perl crs_debug_level.pl level = 1

To Disable debug mode, set level to 0:

Perl crs_debug_level.pl level = 0

We recommend that you set the level to 1 and the maximum value to 5, but the setting is too high and there is too much output information, which is basically hard to understand, only the ORACLE department dedicated for R & D and testing can understand.

Therefore, when diagnosing RAC problems, we recommend that you use the attachment tool to set the debug level of the log file. In this way, we can see more detailed logs, which is more conducive to quick problem locating.

The methods are described as follows:

Method 1: modify the configuration file

1. vi $ CRS_HOME/bin/racgvip

Set

# _ USR_ORA_DEBUG = 1

Change

_ USR_ORA_DEBUG = 1

2. vi $ CRS_HOME/bin/racgwrap

Set

# _ USR_ORA_DEBUG = 1 & export _ USR_ORA_DEBUG

Change

_ USR_ORA_DEBUG = 1 & export _ USR_ORA_DEBUG

3. Modify $ ORACLE _ HOME/bin/racgwrap

Set

# _ USR_ORA_DEBUG = 1 & export _ USR_ORA_DEBUG

Change

_ USR_ORA_DEBUG = 1 & export _ USR_ORA_DEBUG

Method 3: Set the debug level for each component

1. crsctl lsmodules css

CSSD

COMMCRS

COMMNS

2. crsctl lsmodules crs

CRSUI

CRSCOMM

Crsrrti

CRSMAIN

CRSPLACE

CRSAPP

CRSRES

CRSOCR

CRSTIMER

CRSEVT

CRSD

CLUCLS

CSSCLNT

COMMCRS

COMMNS

3. crsctl lsmodules evm

EVMD

EVMDMAIN

EVMDCOMM

EVMEVT

EVMAPP

EVMAGENT

CRSOCR

CLUCLS

CSSCLNT

COMMCRS

COMMNS

4. Run the following commands for the preceding output:

Crsctl debug log <component> <module >:< level >{, <module >:< level>]

For example, crsctl debug log crs "CRSCOMM: 2"

Because the above operations can follow the rules, you can easily complete this task by using the attachment script.