Directory

Howard

Listings(0)

Reviews(1)

Favourites(0)

check_db

Works with many changes, but no documentation

byHoward, March 27, 2012

Unlike the other reviewer (who apparently didn't read what little documentation there is since he/she tried to run a .java file at the command line which is nowhere suggested in the notes), I got this to work (kinda).

In later relases, you normally connect to an Oracle environment with a service_name, not a SID, so the old host:port:sid format no longer works. You need to pass host:port/service_name. I changed the .java file from the : to a /, recompiled, and I could conenct. However, the JSA file downloaded is a zip, not a jar, so that doesn't work, either. Easily fixed, but confusing if you aren't aware.

I also still don't know what the regular expression is supposed to do.

Also, the .sql file you run shouldn't be terminated with a semicolon, as you may be used to in oracle. The string is executed by JDBC dynamically, so you just pass "select blah from table", not "select blah from table;"

Lastly, the plugin must be protected (they all shoudl be, admittedly), as the SQL is just run "as is". At least it requires a query, so you can't accidentally run "truncate table big_table" :)

It just needs about two hours of work to take it over the goal line.

Below is where I ended up after all the changes I mentioned above...

[root@ADM-SHOWARD ~]# ./check_db -H 172.26.24.6 -p 1521 -s "ecomonline.expdev.local" -l system -x express -f mysql.sql -r % -w 1 -c 2 -L "who knows"
java.sql.SQLException: Listener refused the connection with the following error:
ORA-12505, TNS:listener does not currently know of SID given in connect descriptor

at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:458)
at oracle.jdbc.driver.PhysicalConnection.(PhysicalConnection.java:546)
at oracle.jdbc.driver.T4CConnection.(T4CConnection.java:236)
at oracle.jdbc.driver.T4CDriverExtension.getConnection(T4CDriverExtension.java:32)
at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:521)
at java.sql.DriverManager.getConnection(DriverManager.java:620)
at java.sql.DriverManager.getConnection(DriverManager.java:200)
at DbCheck.testSS(DbCheck.java:156)
at DbCheck.main(DbCheck.java:140)
Caused by: oracle.net.ns.NetException: Listener refused the connection with the following error:
ORA-12505, TNS:listener does not currently know of SID given in connect descriptor

at oracle.net.ns.NSProtocol.connect(NSProtocol.java:395)
at oracle.jdbc.driver.T4CConnection.connect(T4CConnection.java:1102)
at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:320)
... 8 more
[root@ADM-SHOWARD ~]# vi DbCheck.java
[root@ADM-SHOWARD ~]# javac DbCheck.java
[root@ADM-SHOWARD ~]# export CLASSPATH=/root/ojdbc6.jar:/root/JSAP-2.0a.zip:.
[root@ADM-SHOWARD ~]# ./check_db -H 172.26.24.6 -p 1521 -s "ecomonline.expdev.local" -l system -x express -f mysql.sql -r % -w 1 -c 2 -L "who knows"
java.sql.SQLSyntaxErrorException: ORA-00911: invalid character

at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:445)
at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:396)
at oracle.jdbc.driver.T4C8Oall.processError(T4C8Oall.java:879)
at oracle.jdbc.driver.T4CTTIfun.receive(T4CTTIfun.java:450)
at oracle.jdbc.driver.T4CTTIfun.doRPC(T4CTTIfun.java:192)
at oracle.jdbc.driver.T4C8Oall.doOALL(T4C8Oall.java:531)
at oracle.jdbc.driver.T4CStatement.doOall8(T4CStatement.java:193)
at oracle.jdbc.driver.T4CStatement.executeForDescribe(T4CStatement.java:873)
at oracle.jdbc.driver.OracleStatement.executeMaybeDescribe(OracleStatement.java:1167)
at oracle.jdbc.driver.OracleStatement.doExecuteWithTimeout(OracleStatement.java:1289)
at oracle.jdbc.driver.OracleStatement.executeQuery(OracleStatement.java:1491)
at oracle.jdbc.driver.OracleStatementWrapper.executeQuery(OracleStatementWrapper.java:406)
at DbCheck.testSS(DbCheck.java:158)
at DbCheck.main(DbCheck.java:140)
[root@ADM-SHOWARD ~]# ./check_db -H 172.26.24.6 -p 1521 -s "ecomonline.expdev.local" -l system -x express -f mysql.sql -r '(%)' -w 1 -c 2 -L "who knows"
java.sql.SQLSyntaxErrorException: ORA-00911: invalid character

at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:445)
at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:396)
at oracle.jdbc.driver.T4C8Oall.processError(T4C8Oall.java:879)
at oracle.jdbc.driver.T4CTTIfun.receive(T4CTTIfun.java:450)
at oracle.jdbc.driver.T4CTTIfun.doRPC(T4CTTIfun.java:192)
at oracle.jdbc.driver.T4C8Oall.doOALL(T4C8Oall.java:531)
at oracle.jdbc.driver.T4CStatement.doOall8(T4CStatement.java:193)
at oracle.jdbc.driver.T4CStatement.executeForDescribe(T4CStatement.java:873)
at oracle.jdbc.driver.OracleStatement.executeMaybeDescribe(OracleStatement.java:1167)
at oracle.jdbc.driver.OracleStatement.doExecuteWithTimeout(OracleStatement.java:1289)
at oracle.jdbc.driver.OracleStatement.executeQuery(OracleStatement.java:1491)
at oracle.jdbc.driver.OracleStatementWrapper.executeQuery(OracleStatementWrapper.java:406)
at DbCheck.testSS(DbCheck.java:158)
at DbCheck.main(DbCheck.java:140)
[root@ADM-SHOWARD ~]# ./check_db -H 172.26.24.6 -p 1521 -s "ecomonline.expdev.local" -l system -x express -f mysql.sql -r '(%)' -w 1 -c 2 -L "who knows"
No match found for regular expression:(%)
[root@ADM-SHOWARD ~]# ./check_db -H 172.26.24.6 -p 1521 -s "ecomonline.expdev.local" -l system -x express -f mysql.sql -r 'OPEN%' -w 1 -c 2 -L "STATUS"
OPEN
No match found for regular expression:OPEN%
[root@ADM-SHOWARD ~]# ./check_db -H 172.26.24.6 -p 1521 -s "ecomonline.expdev.local" -l system -x express -f mysql.sql -r 'OPEN' -w 1 -c 2 -L "STATUS"
OPEN
Unsupported data type detected..
[root@ADM-SHOWARD ~]# vi DbCheck.java
[root@ADM-SHOWARD ~]# vi mysql.sql
[root@ADM-SHOWARD ~]# ./check_db -H 172.26.24.6 -p 1521 -s "ecomonline.expdev.local" -l system -x express -f mysql.sql -r 'OPEN' -w 1 -c 2 -L "STATUS"
0
No match found for regular expression:OPEN
[root@ADM-SHOWARD ~]# vi mysql.sql
[root@ADM-SHOWARD ~]# ./check_db -H 172.26.24.6 -p 1521 -s "ecomonline.expdev.local" -l system -x express -f mysql.sql -r 'OPEN' -w 1 -c 2 -L "STATUS"
5
No match found for regular expression:OPEN
[root@ADM-SHOWARD ~]# vi mysql.sql
[root@ADM-SHOWARD ~]# ./check_db -H 172.26.24.6 -p 1521 -s "ecomonline.expdev.local" -l system -x express -f mysql.sql -r 'OPEN' -w 1 -c 2 -L "STATUS"
0
No match found for regular expression:OPEN
[root@ADM-SHOWARD ~]# ./check_db -H 172.26.24.6 -p 1521 -s "ecomonline.expdev.local" -l system -x express -f mysql.sql -r '5' -w 1 -c 2 -L "STATUS"
0
No match found for regular expression:5
[root@ADM-SHOWARD ~]#

mysql.sql file contents are below:

select case status when 'OPEN' then 0 when 'MOUNTED' then 1 when 'NOT MOUNTED' then 2 end case from v$instance

Nagios, the Nagios logo, and Nagios graphics are the servicemarks, trademarks, or registered trademarks owned by Nagios Enterprises. All other servicemarks and trademarks are the property of their respective owner. The files and information on this site are the property of their respective owner(s). Nagios Enterprises makes no claims or warranties as to the fitness of any file or information on this website, for any purpose whatsoever. In fact, we officially disclaim all liability. We do, however, think these community contributions are pretty damn cool. Website Copyright © 2009-2024 Nagios Enterprises, LLC. All rights reserved.