APPSDBA Data Lake

 Need to check  OS admin first to ensure system has sufficient 'free RAM' before changing Heap Size.  Login to Console http://myserver.cn.com :<admin Port>/console/ Go to the below section. Domain Configurations > Environment > click the link " Servers " On right side will see  Configuration > " Customize this table "      Click  >      oacore_server1    Click   Server Start  ("Sub Tab")     Click Lock & Edit     Go to Arguments     Entry like this.   -Xms512m -Xmx1024m -Djava.security.policy=/../fs1/FMW_Home/wlserver_10.3/server/lib/weblogic.policy     Change to     -Xms1024m -Xmx2048m -Djava.security.policy=/.../fs1/FMW_Home/wlserver_10.3/server/lib/weblogic.policy Click the ' Save ' button to save the configuration changes. Once the customizations are complete and saved, click the 'Activate Changes' button in the 'Change Center' panel to activate the changes. Retest the performance Specially during D

  CRONTAB What is Crontab? Crontab is a file which contains the schedule of cron entries to be run and at specified times. Crontab Commands             export EDITOR=vi ;to specify a editor to open crontab file.    crontab -e      Edit crontab file, or create one if it doesn’t already exist.     crontab -l     crontab list of cronjobs , display crontab file contents. crontab -r     Remove your crontab file. crontab -v     Display the last time you edited your crontab file. Crontab Examples A line in crontab file like below removes the tmp files from /home/appsolworld/tmp each day at 6:30 PM. 30     18     *     *     *         rm /home/appsolworld/tmp/* Crontab every hour This is most commonly used for running cron every hour and executing a command after an interval of one hour. crontab format every hour is simple to have hour field as *  which runs every hour as the clock switches to new hour.  if you want to run it at the beginning of hour the minute filed needs to be 0 or any other

  To resolve this issue, below steps would be required to perform before installing or upgrading: Check port 6000 is being used (“netstat -a | grep 6000”) Should be disabled the graphics console login process on the Linux server. This can be done by logging in as root and issuing the following commands: Find the process that uses port 6000 by the command “lsof -i TCP:6000”. Use “kill -9” to abort the process found in the previous step Confirm that nothing is listening at port 6000 (“netstat -a | grep 6000”)        [root@shsdnbty01 ~]# lsof -i TCP:6000                          COMMAND   PID USER   FD   TYPE DEVICE SIZE/OFF NODE NAME                               X       11082 root    5u  IPv6  58891      0t0  TCP *:x11 (LISTEN)                               X       11082 root    6u  IPv4  58892      0t0  TCP *:x11 (LISTEN) [                             root@shsdnbty01 ~]# kill -9 11082

  Issue Description: Oracle E-business suite R12.2 Upgrade File System Pre-install check Failed : ——————-ADX Database Utility Finished————— DB Version Check has failed. Not able to check the Database version. Please make sure the Database is at 11.2.0.3 or higher DB service_names Check has failed. Not able to check if ebs_patch as an entry exists in Database service_name parameter. Existing DB SID validation has failed. Connection to database failed.  Unable to validate the current SID FIX: Database connectivity issue can be resolved by doing the following steps : Review the  sqlnet.ora file and confirm the following entries are present: SQLNET.ALLOWED_LOGON_VERSION_SERVER i) If the initialization parameter SEC_CASE_SENSITIVE_LOGON is set to FALSE: SQLNET.ALLOWED_LOGON_VERSION_SERVER = 8 ii) If SEC_CASE_SENSITIVE_LOGON is set to TRUE SQLNET.ALLOWED_LOGON_VERSION_SERVER = 10 Modify the service_names parameter  and include ebs_patch as shown below and retry. SQL> sho parameter service

How to recreate oraInventory (Central Inventory) in RDBMS Homes if the central inventory is corrupted or lost? STEP 1: Locating the central inventory   The location of the central inventory can be found from the central inventory pointer. The location of the central inventory can be found from the central inventory pointer can be found from the file /etc/oraInst.loc (AIX and Linux) or /var/opt/oracle/oraInst.loc (Platform specific) If an oraInst.loc file does not exist, then create one as below with the following entries: inventory_loc=<location_for_oraInventory> inst_group=<name_of_group_for_installtion> Example: inventory_loc=/u01/oracle/oraInventory inst_group=oinstall Make sure that the Oracle Owner has proper permissions (755) on the location specified for the oraInventory. STEP 2:   Remove the Central inventory (if it exists) Use the following command to rename the oraInventory (Unix/Linux) $ mv oraInventory oraInventory_orig STEP 4: Attaching the Home for Oracle Data

 To make user as sudo user w e need to use below:      $ su > Enter root password: ******* $ visudo -f /etc/sudoers Find the following section of  /etc/sudoers  file and add your users privileges: # User privilege specification root ALL=(ALL:ALL) ALL user_name ALL=(ALL) ALL make a backup of the  sudoers  files as follows: # cp /etc/sudoers /etc/sudoers.orginal # visudo Add the user like below: # # This file MUST be edited with the 'visudo' command as root. # # Please consider adding local content in /etc/sudoers.d/ instead of # directly modifying this file. # ## Next comes the main part: which users can run what software on ## which machines (the sudoers file can be shared between multiple ## systems). ## Syntax: ## ## user MACHINE=COMMANDS ## ## The COMMANDS section may have other options added to it. ## ## Allow root to run any commands anywhere root ALL=(ALL) ALL ## Allows members of the 'sys' group to run networking, software, ## service mana