Here, we have couple of puzzles, they are mainly:1- Why the database services are dynamically registered with non-default listener while the local_listener definition doesn't exist in the tnsnames.ora file?2- If you do some changes in the tnsnames.ora file related to the local_listener, are these changes dynamically reflected to the database and listener? or do you … Continue reading Why my Oracle Database is not dynamically registered with the Listener?
O/S-Error: (OS 5) Access is denied while upgrading Oracle 12c Database to 19c
Background: I was upgrading an Oracle Database version 12c(12.2.0.1) to version 19c (19.24) on Microsoft Windows.This is a manual command line line upgrade ( I didn't use DBUA).I started by doing some preparation tasks like::: Task #1: Run pre-upgrade checks:: Task #2: Run the preupgrade_fixups.sql:: Task #3: Connect to sqlplus and create pfile from pfile:: … Continue reading O/S-Error: (OS 5) Access is denied while upgrading Oracle 12c Database to 19c
The system cannot find the batch label specified – execute_task when upgrading an Oracle Database
I created a Windows batch script to upgrade and oracle database from 12.2 to 19.23 on Windows platform. The main script line is the following line (which is the main command to upgrade the Oracle Database):%ORACLE_19C_HOME%\bin\dbupgrade1 -n 4 >> %LOG_FILE% 2>&1 But when running the script, the script is error out when executing the above … Continue reading The system cannot find the batch label specified – execute_task when upgrading an Oracle Database
utltz_upg_apply script hangs while shutting down the Oracle Database
I was upgrading one Oracle Database from 12.2.0.1 to 19.23 on Windows platform manually. While upgrading the time zone files (from 26 to 43) and running the utltz_upg_apply.sql it hangs while shutting down the database for the first time.This is the last line displayed in the log file:utltz_upg_apply is ready to update to RDBMS DSTv43 … Continue reading utltz_upg_apply script hangs while shutting down the Oracle Database
OHUC-1026 : unable to authenticate the new password
One of my clients faced the following error, while starting an 12.2 database service on Windows:OHUC-1026 : unable to authenticate the new password Background: The client was trying to change the Oracle Home User password using the orahomeuserctl, after that he was not able to start the Database Windows Service. What is Oracle Home User? … Continue reading OHUC-1026 : unable to authenticate the new password
error while loading shared libraries: libclntsh.so.19.1
While trying to run one of the Oracle Utilities (oratop), I received the following error:oratop: error while loading shared libraries: libclntsh.so.19.1: cannot open shared object file: No such file or directory. This error doesn't mean that the library doesn't exist, but in most cases, it is missing environment settings. Let us first check if this … Continue reading error while loading shared libraries: libclntsh.so.19.1
Getting ORA-29003 Connecting to Oracle Autonomous Database Cloud Service
Couple of days back, I started to get the following error, whenever I tried to connect to any Oracle Autonomous Database Cloud Service from SQL*Plus on my laptop (which was usually working fine for years):ORA-29003: SSL transport detected mismatched server certificate So, I reviewed the sqlnet.ora file under the working Oracle Home, and I found … Continue reading Getting ORA-29003 Connecting to Oracle Autonomous Database Cloud Service
How to find Top Hard Parsing SQL Statements?
Background:A hard parse occurs when a SQL statement has to be loaded into the shared pool. In this case, the Oracle Server has to allocate memory in the shared pool and parse the statement.A hard parse is a heavy process in terms of resources (CPU & Memory), and we should avoid whenever possible.Excessive hard parsing … Continue reading How to find Top Hard Parsing SQL Statements?
ORA-01017: invalid username/password; logon denied
I have a virtual machine with Oracle Database 19c installed. I downloaded this machine from Oracle. {If you are interested, you can download it from the following url: https://www.oracle.com/downloads/developer-vm/community-downloads.html } I started the virtual machine, login as oracle user, and ensured that the environment is set correctly: Then, I tried to login to the database … Continue reading ORA-01017: invalid username/password; logon denied
Installing Oracle Database Sample Schemas (21c)
In this post, I’m going to explain how to install Oracle database sample schemas on Oracle database version 21c. Download the Scripts: Starting from Oracle database 12.2 ,the sample schemas setup scripts are now available from GitHub. Pick the release that matches your database release: https://github.com/oracle/db-sample-schemas/releases Extract the files: Extract the file “db-sample-schemas-21.1.zip” directly into $ORACLE_HOME/demo/schema, … Continue reading Installing Oracle Database Sample Schemas (21c)
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