How do I fix my ORA 12547 TNS contact?

ORA-12547: TNS: lost contact….

  1. Change the Oracle users environment variable PATH to ensure that ‘ld’ is from /usr/ccs/bin.
  2. Verify the following commands return the correct path /usr/ccs/bin.
  3. If you chose to ‘ignore’ or ‘continue’ when prompted during the linking of the patchset then you can relink by doing the following:

Where is Oracle_base?

ORACLE_BASE – ORACLE_BASE is the root of the Oracle Database directory tree. If you install an OFA-compliant database using Oracle Universal Installer defaults, then ORACLE_BASE is X:\oracle\product\10.2. 0 where X is any hard drive.

How do I connect to Sqlplus as Sysdba in Linux?

To start SQL*Plus and connect to the database from the command line:

  1. Open a command window.
  2. Configure the operating system environment variables, as described in “Configuring the Operating System Environment Variables .”
  3. Start SQL*Plus using a command in the following format: sqlplus {username | /} [as sysdba]

How do you relink in Oracle home?

Relinking Oracle Database Client Binaries After Installation

  1. Login as the Oracle Database Client owner user ( oracle ).
  2. Set the ORACLE_HOME environment variable.
  3. Go to the $ORACLE_HOME/bin directory:
  4. Run the relink script with the as_installed option to relink the binaries.

What is Nolog in Sqlplus?

sqlplus /nolog – provides access to utilize sqlplus. The “/nolog” parameter means “start sqlplus, but do not log into a database” The environment variable ORACLE_SID provides the database name, the host is the local machine and the port is, by default, 1521.

What is oracle base name?

/u01/app/oracle. Oracle Database Oracle base, where the Oracle Database software installation owner name is oracle . The Oracle Database binary home is located underneath the Oracle base path.

What is ORACLE_BASE used for?

Key to the OFA is the directory environment variables ORACLE_BASE and ORACLE_HOME: ORACLE_BASE is where you can find common software used by all Oracle software versions; it’s the base of underlying Oracle code trees.

How do I connect to a DBA?

To connect as SYSDBA using OS authentication:

  1. Do one of the following: On Windows: Log in to the Oracle Database XE host computer as a user who is a member of the ORA_DBA user group.
  2. Do one of the following:
  3. At the SQL Command Line prompt, enter the following command: CONNECT / AS SYSDBA.

How do I relink my Rdbms home?

The relink process can be done with the make command. This command must be run under the $ORACLE_HOME/rdbms/lib directory. Remember to change the mode of the related files after relinking….Relink command parameters:

  1. all.
  2. oracle.
  3. network.
  4. client.
  5. client_sharedlib.
  6. interMedia.
  7. precomp.
  8. utilities.

What is relink all in Oracle?

Oracle Home relinking is required to link Oracle provided object files to the OS system library. Relinking guarantees a reliable integration with functions provided by the OS system libraries.

What is the cause of lost contact in ora-12547?

The Oracle docs note this on the ora-12547 error: ORA-12547: TNS: lost contact. Cause: Partner has unexpectedly gone away, usually during process startup. Action: Investigate partner application for abnormal termination. On an Interchange, this can happen if the machine is overloaded.

What to do if oracle11g-ora-12547 fails?

Once you will reach the “pre-reqs” screen, check “Ignore all” to continue the installation. When running ./dbca from $ORACLE_HOME/bin, it fails with ORA-12547. I checked $ORACLE_HOME/network/admin and listener.ora , sqlnet.ora , and tnsnames.ora all look OK.

What does TNS stand for in ORAC Le?

The “TNS lost contact error is most commonly a network error, and you can diagnose it by following my notes on troubleshooting sql*net connectivity errors. Orac le documentation offers information on ORA-12547 regarding it’s occurrence after installing patchset.

When does TNS lose contact when running DBCA?

ORA-12547: TNS :lost contact when try to connect to Oracle. First, I think the server is down, but I check it, it is OK. And so many body say ‘chmod 6751 oracle’, I did it, but I got another error: