Parm Patram » RMAN

Parmanand Patram Resume

admin — Wed, 14 Jul 2010 00:15:10 +0000

Parm Patram
Phone : (404) 216-4283
Email: ppatram _at_ btsincorporated.com

Summary
Mr. Patram has been an Oracle DBA/Oracle Apps DBA for more than 5 years and a Linux/Solaris Systems Admin for more than 10 years. He holds the Oracle Certified Professional and Solaris Certified System Administrator credentials and is also very versed in Linux (Redhat).

He has proven ability to improve manageability, stability, security and performance. His analytical, troubleshooting, and creative abilities allow him to adapt to any circumstance quickly, accurately pinpoint root cause, and come up with unique solutions.

Skills Summary
* Oracle 10g/11g
* Recovery Manager (RMAN)
* User and Security Administration
* Export/Import (exp, expdp)
* Logminer
* Streams Replication
* Dataguard Standby Database
* Oracle Enterprise Manager (OEM)
* Oracle EBS
* Performance Tuning
* Materialized Views (Snapshots)
* PL/SQL, sqlplus
* Real Application Clusters (RAC)
* mySQL
* postgresql
* Unix Shell Scripting (bash, ksh)
* PHP/Perl, expect, C Programming
* Code Versioning (svn, fisheye)
* Linux/Solaris (kickstart, LVM/Disksuite RAID, NFS, samba)
* Installation/Configuration (rpm, up2date, yum, apt-get)
* Advanced Network Troubleshooting (ping, ipcalc, arping, tcpdump, nmap)
* Advanced Application Troubleshooting (strace/truss, netstat, ipcs, lsof, ps, jconsole)
* Monitoring (Hyperic, openNMS, SNMP)
* Migration (rsync)
* Change/Configuration Auditing (Tripwire, custom scripting)
* Change Control
* Automation (expect, Perl, C, shell)
* Apache/Tomcat

Work Employment History
Nov 2009 – Present: Linux/Solaris & Oracle Database Administrator at Barnhardt.
* Managed development, stage and production databases and application servers for large manufacturing company’s ERP.
* Install/configure Solaris 9 on Sunfire 280R. Developed method to clone the production server to backup/stage for consistency. Did some hardware work with RSC.
* Updated old documentation and wrote new articles in tech services wiki relating to Linux/Solaris/Oracle.
* Developed and implemented method to permit Oracle 10g Dataguard to compress archivelogs using SSH port forwarding (Linux).
* Wrote custom plugins in Perl/bash/ksh for Hyperic to monitor Oracle Streams, Oracle Dataguard, and certain specific metrics on the application server.
* Developed scripts using expect to test ERP functionality in an automated fashion.
* Helped establish Change Control process.
* Installed ERP on Linux (RHEL 5) for functional/development testing.

* Streamlined Dev refresh process by scripting much of the pieces and creating a checklist of the order to execute those scripts. Project time did not permit a fully automated approach, which was the next progression.
* Updated some of the scripts to use command-line arguments. This allowed the scripts to be exactly the same, but function differently based on arguments.
* Updated the ‘standby monitor’ to perform checks to eliminate false alerts.
* Developed ‘Tango’, which is a way to detect changes to an Oracle database’s settings or object properties. Tango consists of Oracle PL/SQL package and bash/Perl OS scripts.
* Developed method to resize the filesystem used for archive logging without needing to stop the database (Linux).
* Installed monitoring/auditing tools: Tripwire, openNMS, and Hyperic on RHEL 5 systems.
* Helped with securing the ERP platform.
* Identified/corrected performance problems resulting from over-sized SGA. Implemented SQL Profiling to improve performance of certain problem queries (Oracle).

Aug 2005 – Nov 2009: Senior Linux/Oracle Database Consultant at Business Technology Services, Inc.
* Specialized in RHEL, Oracle 10g and Oracle EBS.
* Managed company’s dedicated Linux server which services their website and email needs.
* Worked for many clients of BTS, Inc. in various industries.
* On call support.
* Oracle Dataguard standby database implementation, troubleshooting and tuning.
* Oracle Streams replication.
* General Troubleshooting and problem resolution.
* Custom monitoring for Linux OS and Oracle database.
* Oracle database performance tuning.
* Oracle RAC on Linux (RHEL) implementation and monitoring.
* Oracle EBS (11i and 12i) patch investigation and installation.
* Oracle EBS cloning.

Jan 2000 – August 2005: Senior Linux Administrator at Interland, Inc (now Peer1).
* Worked in Dedicated Server Solutions department which offered billable Admin services to company’s Dedicated Server customers.
* DSS also provided Data Center Operations support for company’s Shared Servers in addition to the Dedicated Servers (5000+ total).
* Tier III support for Dedicated Services (non-billable questions and issues).
* Assisted Engineering with build issues by writing work-around scripts and providing diagnostic data.
* Was the leading revenue earner in DSS.
* Some hardware work (HP/Compaq Proliant, Cobalt, white-box).
* Plesk Linux Control Panel SME. Wrote many scripts to manage and migrate Cobalt RAQ, systems with no control panel, and older versions of Plesk to the newest Plesk versions.
* Instituted Clean, Patch, &Lockdown service for customers whose servers had been hacked into.
* Invented ‘Backplane Sharing’ to retrieve data from RAID array on non-booting servers by using the dead system to power up the RAID array so it can be mounted to a running machine in order to perform a data copy.
* Developed unique method of reviving badly hacked servers that fail to boot by booting from CD, chroot, then manual services startup. Used as a stop-gap until a full migration to a new server could be effected.
* Provided excellent sales support for sizing requirements and other technical consulting required for completing the sale.

Miscellaneous Freelance Work
Omega Learning Centers (http://omegalearningcenter.com).
Administer company’s web server and email server. Maintain and add new functionality to company’s suite of proprietary web-based interfaces used for running their business. Instrumental in scaling the products out to meet their need to franchise. Company now has 3 locations and growing.

3D Cellular (http://omegalearningcenter.com).
Administer company’s web and email server. Manage server firewall. Responsible for the SSL certificates in use for both the website and email. Implemented VPN between LAN and Internet server. Designed custom scripts for backing up customer’s project files from their local area network to the server as well as designing and implementing an off-site backup plan for the server itself.

Kagan Creative (http://kagancreative.com).
Server administration and migration. Built and configured a dedicated mySQL server for client. Also responsible for about 10 SSL certificates for various websites running on the web server. Configured 3-node load-balanced web server for client.

HPP Christian Hosting (http://hppchristianhosting.com).
Administered 3 high-traffic and heavily populated web servers totaling about 1000 different websites. Identify and upgrade old vulnerable applications running on the various websites that were being hacked into. Migrated the servers a few times to keep up with growing demand and the need for faster hardware. Assisted with some handover work when client sold the business in September 2007.

Certifications
Oracle Certified Professional (Database and Grids), 2009
Solaris Certified System Administrator, 2003
Microsoft Certified Systems Engineer, 1999

Education
1990, Associates of Arts (Data Processing)

References
Available Upon Request

Recovery Scenario: bad datafile AND missing online redo

admin — Sun, 03 May 2009 01:50:02 +0000

1. Trying to start the database using ’startup’ will fail trying to open the datafile. It will give the datafile number let’s say D.

2. Make sure we have backups of all the datafiles. In RMAN type:
REPORT NEED BACKUP REDUNDANCY 1;

If there are datafiles that were not backed up as yet, there are 2 options:
a) delete the datafiles. (RMAN will create them and apply their data from redo logs).
b) issue RMAN command:
BACKUP DATAFILE N;

3. Use RMAN to restore and recover the datafile found missing in step #1. The recovery operation will fail because the online redo is missing.
RESTORE DATAFILE D;
RECOVER DATAFILE D;

4. Find the last log sequence:
SELECT SEQUENCE# FROM V$ARCHIVED_LOG WHERE RECID = (SELECT MAX(RECID) FROM V$ARC
HIVED_LOG);

5. Run the following RMAN script. The nunber X will be 1 more than the number you got from step 4. This is because the UNTIL SEQUENCE clause of RMAN goes to one less than the number specified.

RUN {
SET UNTIL SEQUENCE X THREAD 1;
RESTORE DATABASE;
RECOVER DATABASE;
ALTER DATABASE OPEN RESETLOGS;
}

get last sequence# in case of missing online redo logs

admin — Fri, 01 May 2009 15:39:36 +0000

select max(sequence#) from v$archived_logs;

this can then be used in rman as follows:

run{
set until sequence 15 thread 1;
restore database;
recover database;
alter database open resetlogs;
}

Sample RMAN Scripts

admin — Wed, 01 Oct 2008 19:41:18 +0000

http://oracle.3dub.com/RMAN/

RMAN Catalog Setup

admin — Tue, 30 Sep 2008 00:40:08 +0000

[oracle@odbs ~]$ sqlplus / as sysdba

SQL*Plus: Release 11.1.0.6.0 – Production on Mon Sep 29 20:05:49 2008

Connected to:
Oracle Database 11g Enterprise Edition Release 11.1.0.6.0 – Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options

SQL> create user rman_user identified by rabid default tablespace RMAN_CAT temporary tablespace TEMP;

User created.

SQL> grant resource,connect,recovery_catalog_owner to rman_user;

Grant succeeded.

SQL> quit
Disconnected from Oracle Database 11g Enterprise Edition Release 11.1.0.6.0 – Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
[oracle@odbs ~]$ rman

Recovery Manager: Release 11.1.0.6.0 – Production on Mon Sep 29 20:07:59 2008

RMAN> connect catalog rman_user/rabid

connected to recovery catalog database

RMAN> create catalog tablespace RMAN_CAT;

recovery catalog created

RMAN> connect target

connected to target database: ORCL (DBID=1191592594)

RMAN> register database;

database registered in recovery catalog
starting full resync of recovery catalog
full resync complete

RMAN> run
{
allocate channel c1 type disk;
backup database format ‘db_%u_%d_%s’;
backup format ‘log_t%t_s%s_p%p’
(archivelog all);
}

allocated channel: c1
channel c1: SID=115 device type=DISK

Starting backup at 29-SEP-08
channel c1: starting full datafile backup set
channel c1: specifying datafile(s) in backup set
input datafile file number=00002 name=/u01/app/oracle/oradata/orcl/sysaux01.dbf
input datafile file number=00001 name=/u01/app/oracle/oradata/orcl/system01.dbf
input datafile file number=00003 name=/u01/app/oracle/oradata/orcl/undotbs01.dbf
input datafile file number=00006 name=/u01/app/oracle/oradata/orcl/rman_catalog
input datafile file number=00005 name=/u01/app/oracle/oradata/orcl/example01.dbf
input datafile file number=00004 name=/u01/app/oracle/oradata/orcl/users01.dbf
channel c1: starting piece 1 at 29-SEP-08
channel c1: finished piece 1 at 29-SEP-08
piece handle=/u01/app/oracle/product/11.1.0/db_1/dbs/db_01jrr4j4_ORCL_1 tag=TAG2 0080929T201323 comment=NONE
channel c1: backup set complete, elapsed time: 00:05:21
channel c1: starting full datafile backup set
channel c1: specifying datafile(s) in backup set
including current control file in backup set
including current SPFILE in backup set
channel c1: starting piece 1 at 29-SEP-08
channel c1: finished piece 1 at 29-SEP-08
piece handle=/u01/app/oracle/product/11.1.0/db_1/dbs/db_02jrr4u7_ORCL_2 tag=TAG2 0080929T201323 comment=NONE
channel c1: backup set complete, elapsed time: 00:00:01
Finished backup at 29-SEP-08

Starting backup at 29-SEP-08
current log archived
channel c1: starting archived log backup set
channel c1: specifying archived log(s) in backup set
input archived log thread=1 sequence=188 RECID=2 STAMP=666126255
input archived log thread=1 sequence=189 RECID=4 STAMP=666136994
input archived log thread=1 sequence=190 RECID=6 STAMP=666137372
input archived log thread=1 sequence=191 RECID=8 STAMP=666155715
input archived log thread=1 sequence=192 RECID=10 STAMP=666181071
input archived log thread=1 sequence=193 RECID=12 STAMP=666202337
input archived log thread=1 sequence=194 RECID=14 STAMP=666223313
input archived log thread=1 sequence=195 RECID=16 STAMP=666223791
input archived log thread=1 sequence=196 RECID=18 STAMP=666232938
input archived log thread=1 sequence=197 RECID=20 STAMP=666258139
input archived log thread=1 sequence=198 RECID=22 STAMP=666283234
input archived log thread=1 sequence=199 RECID=24 STAMP=666306043
input archived log thread=1 sequence=200 RECID=26 STAMP=666309784
input archived log thread=1 sequence=201 RECID=28 STAMP=666316859
input archived log thread=1 sequence=202 RECID=30 STAMP=666339853
input archived log thread=1 sequence=203 RECID=32 STAMP=666363436
input archived log thread=1 sequence=204 RECID=34 STAMP=666384833
input archived log thread=1 sequence=205 RECID=36 STAMP=666396177
input archived log thread=1 sequence=206 RECID=38 STAMP=666396660
input archived log thread=1 sequence=207 RECID=40 STAMP=666414900
input archived log thread=1 sequence=208 RECID=42 STAMP=666439937
input archived log thread=1 sequence=209 RECID=44 STAMP=666463456
input archived log thread=1 sequence=210 RECID=46 STAMP=666482535
input archived log thread=1 sequence=211 RECID=48 STAMP=666483086
input archived log thread=1 sequence=212 RECID=50 STAMP=666496858
input archived log thread=1 sequence=213 RECID=52 STAMP=666511346
input archived log thread=1 sequence=214 RECID=54 STAMP=666523956
input archived log thread=1 sequence=215 RECID=56 STAMP=666540114
input archived log thread=1 sequence=216 RECID=58 STAMP=666554550
input archived log thread=1 sequence=217 RECID=60 STAMP=666569511
input archived log thread=1 sequence=218 RECID=62 STAMP=666576197
input archived log thread=1 sequence=219 RECID=64 STAMP=666597710
input archived log thread=1 sequence=220 RECID=66 STAMP=666600496
input archived log thread=1 sequence=221 RECID=68 STAMP=666618400
input archived log thread=1 sequence=222 RECID=70 STAMP=666637130
input archived log thread=1 sequence=223 RECID=72 STAMP=666648749
input archived log thread=1 sequence=224 RECID=74 STAMP=666655412
input archived log thread=1 sequence=225 RECID=76 STAMP=666675364
input archived log thread=1 sequence=226 RECID=78 STAMP=666699443
input archived log thread=1 sequence=227 RECID=80 STAMP=666722128
input archived log thread=1 sequence=228 RECID=82 STAMP=666735075
input archived log thread=1 sequence=229 RECID=84 STAMP=666735595
channel c1: starting piece 1 at 29-SEP-08
channel c1: finished piece 1 at 29-SEP-08
piece handle=/u01/app/oracle/product/11.1.0/db_1/dbs/log_t666735600_s3_p1 tag=TA G20080929T201958 comment=NONE
channel c1: backup set complete, elapsed time: 00:04:06
Finished backup at 29-SEP-08
released channel: c1

RMAN> print script b_whole;

RMAN> help

RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-00558: error encountered while parsing input commands
RMAN-01009: syntax error: found “identifier”: expecting one of: “allocate, amper , alter, advise, backup, beginline, blockrecover, catalog, change, connect, copy , convert, create, crosscheck, configure, duplicate, debug, delete, drop, exit, endinline, flashback, grant, host, import, {, library, list, mount, open, print, quit, recover, register, release, replace, report, renormalize, reset, restore, resync, rman, run, rpctest, repair, revoke, set, setlimit, sql, switch, spool, startup, shutdown, send, show, test, transport, upgrade, unregister, validate”
RMAN-01008: the bad identifier was: help
RMAN-01007: at line 1 column 1 file: standard input

RMAN> ?

RMAN>