RACcheck – RAC Configuration Audit ToolPosted: 20/12/2011
RACcheck is a tool developed by the RAC Assurance development team for use by customers to automate the assessment of RAC systems for known configuration problems and best practices.
RACcheck is a RAC Configuration Audit tool designed to audit various important configuration settings within a Real Application Clusters (RAC), Oracle Clusterware (CRS), Automatic Storage Management (ASM) and Grid Infrastructure environment. The tool audits configuration settings within the following categories:
- OS kernel parameters
- OS packages
- Many other OS configuration settings important to RAC.
- CRS/Grid Infrastructure
- Database parameters
- Many other database configuration settings important to RAC.
1. RACcheck is NON-INTRUSIVE and does not change anything in the environment, except as detailed below:
– SSH user equivalence for the RDBMS software owner is assumed to be configured among all the database servers being audited in order for it to execute commands on the remote database server nodes. If the tool determines that this user equivalence is not established it will offer to set it up either temporarily or permanently at the option of the user. If the user chooses to set up SSH user equivalence temporarily then the script will do so for the duration of the execution of the tool but then it will return the system to the state in which it found SSH user equivalence originally. For those wishing to configure SSH user equivalence outside the tool (if not already configured), consult My Oracle Support Note: 372795.1.
– RACcheck creates a number of small output files into which the data necessary to perform the assessment is collected
– RACcheck creates and executes some scripts dynamically in order to accomplish some of the data collection
– RACcheck cleans up after itself any temporary files that are created and not needed as part of the collection.
2. RACcheck interrogates the system to determine the status of the Oracle stack components (ie., Grid Infrastructure, RDBMS, RAC, etc) and whether they are installed and/or running. Depending upon the status of each component, the tool runs the appropriate collections and audit checks. If due to local environmental configuration the tool is unable to properly determine the needed environmental information please refer to the TROUBLESHOOTING section.
3. Watchdog daemon – RACcheck automatically runs a daemon in the background to monitor command execution progress. If, for any reason, one of the commands run by the tool should hang or take longer than anticipated, the monitor daemon kills the hung command after a configurable timeout so that main tool execution can progress. If that happens then the collection or command that was hung is skipped and a notation is made in the log. If the default timeout is too short please see the TROUBLESHOOTING section regarding adjustment of the RAT_TIMEOUT, and RAT_ROOT_TIMEOUT parameters.
4. If RACcheck’s driver files are older than 90 days, the driver files are considered to be “stale” and the script will notify the user of a stale driver file. A new version of the tool and its driver files (kit) must be obtained from MOS Note 1268927.1.
5. When the RACcheck completes the collection and analysis it produces two reports, summary and detailed. A output .zip file is also produced by RACcheck. This output .zip file can be provided to Oracle Support for further analysis if an SR needs to be logged. The detailed report will contain Benefit/Impact, Risk and Action/Repair information. In many cases it will also reference publicly available documents with additional information about the problem and how to resolve it.
6. The results of the audit checks can be optionally uploaded into database tables for reporting purposes. See below for more details on this subject.
7. In some cases customers may want to stage RACcheck on a shared filesystem so that it can be accessed from various systems but be maintained in a single location rather than being copied to each cluster on which it may be used. The default behavior of the tool is to create a subdirectory and its output files in the location where the tool is staged. If that staging area is a read only filesystem or if the user for any reason would like the output to be created elsewhere then there is an environment variable which can be used for that purpose. The RAT_OUTPUT parameter can be set to any valid writable location and the output will be created there.
Oracle Server – Enterprise Edition – Version: 10.2.0.1 to 126.96.36.199 – Release: 10.2 to 11.2
- Linux x86
- IBM AIX on POWER Systems (64-bit)
- Oracle Solaris on SPARC (64-bit)
- Linux x86-64
To download RAC Check tool use this note on MoS:
RACcheck – RAC Configuration Audit Tool [ID 1268927.1]
Example of report output: