July | 2010 | Catt Solutions

Enable ADMIN Tracing on Oracle Listener:

Most Oracle database connects are made through the use of an Oracle process called the LISTENER which monitors a certain machine and port for connection requests to one or more database instances. There are times when a DBA or SA will want to monitor connects being made through the listener for various reasons. This article covers the setup of ADMINISTRATIVE level tracing of you Oracle Listener and will work on UNIX, Linux, and Windows based machines.

1. Logon to your Oracle database server as the Oracle software owner.

2. Open up the LSNRCTL utility.

mylinux:>lsnrctl

LSNRCTL for LINUX: Version 10.2.0.4.0 – Production on 3-Jul-2010 15:17:05

Copyright (c) 1991, 2007, Oracle. All rights reserved.

Welcome to LSNRCTL, type “help” for information.

LSNRCTL>

3. If you are not using the default name of the Oracle listener (LISTENER) then define the Oracle listener name with the following command: set current_listener

LSNRCTL> set current_listener listener_orcl
Current Listener is listener_orcl
LSNRCTL>

4. If you have established a password for your oracle listener set it in the LSNRCTL session with the following command: set password

LSNRCTL> set password oracle
The command completed successfully
LSNRCTL>

5. Turn on admin level tracing by specifying 10 or admin as the level with the following command: set trc_level

LSNRCTL> set trc_level 10
Connecting to
(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=192.168.0.110)(PORT=1521)))
listener_orcl parameter “trc_level” set to admin
The command completed successfully

LSNRCTL> set trc_level admin
Connecting to
(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=192.168.0.110)(PORT=1521)))
listener_orcl parameter “trc_level” set to admin
The command completed successfully
LSNRCTL>

6. Define the name of the trace file that will be produced by the listener process upon establishment of user connection with the command below: set trc_file

LSNRCTL> set trc_file admin_access_trace
Connecting to
(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=192.168.0.110)(PORT=1521)))
listener_orcl parameter “trc_file” set to admin_access_trace.trc
The command completed successfully
LSNRCTL>

NOTE: You do not have to set a trace directory by default the trace files are placed under: $ORACLE_HOME/network/trace

7. Save the changes made to the listener.ora file with the following command: save_config

LSNRCTL> save_config
Connecting to
(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=192.168.0.110)(PORT=1521)))
Saved listener_orcl configuration parameters.
Listener Parameter File /opt/app/oracle/10.2.0/network/admin/listener.ora
Old Parameter File /opt/app/oracle/10.2.0/network/admin/listener.bak
The command completed successfully
LSNRCTL>

8. Exit out of LSNRCTL utility, change directories to ORACLE_HOME/network/trace, list the files present and you can see that the trace has already begun.

LSNRCTL> exit
mylinux:> ls -lrt
total 1008
-rw-r—– 1 oracle dba 408755 Jul 3 15:25 listener_orcl.trc
-rw-r—– 1 oracle dba 43347 Jul 3 15:40 user_access_trace.trc
-rw-r—– 1 oracle dba 34150 Jul 3 15:42 admin_access_trace.trc

9. Logon to the RDBMS as sysdba and exit.

mylinux:> sqlplus ‘system/devlmgr as sysdba’

SQL*Plus: Release 10.2.0.4.0 – Production on Sat Jul 3 15:44:02 2010

Copyright (c) 1982, 2007, Oracle. All Rights Reserved.

Connected to:
Oracle Database 10g Enterprise Edition Release 10.2.0.4.0 – 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options

SQL> exit
Disconnected from Oracle Database 10g Enterprise Edition Release 10.2.0.4.0 –
64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
mylinux:>

10. Perform another listing of the files under the directory $ORACLE_HOME/network/admin and you will see that the file admin_access_trace.trc has grown by recording the connection
from user in step 9.

mylinux:> ls -lrt
total 1136
-rw-r—– 1 oracle dba 408755 Jul 3 15:25 listener_orcl.trc
-rw-r—– 1 oracle dba 43347 Jul 3 15:40 user_access_trace.trc
-rw-r—– 1 oracle dba 119638 Jul 3 15:47 admin_access_trace.trc
mylinux:>

11 This information can be used to show where connections in you database are coming from and other statistical information about the network connection being established with administrative options.

Larry J. Catt, OCP 91, 10g
oracle@allcompute.com
www.allcompute.com

During the normal administration and operation of an Oracle database system, programming units within the database can become invalid for various reasons. To resolve this issue, the Oracle RDBMS provides the package UTL_RECOMP to recompile objects which are currently in an invalid status. The UTL_RECOMP package provides the administrator with 3 subprogram units: PARALLEL_SLAVE, RECOMP_PARALLEL, and RECOMP_SERIAL. This article covers the user of package and subprogram unit UTL_RECOMP.RECOMP_SERIAL and was written against an Oracle 10.2.0.4 RDBMS on RHEL.

1. Logon to you Oracle database server as the Oracle software owner.

2. Connect to SQLPLUS as the sysdba user.

mylinux:> sqlplus '/ as sysdba'

SQL*Plus: Release 10.2.0.4.0 - Production on Sat Jul 3 10:24:46 2010 Copyright (c) 1982, 2007, Oracle. All Rights Reserved. Connected to: Oracle Database 10g Enterprise Edition Release 10.2.0.4.0 - 64bit Production With the Partitioning, OLAP, Data Mining and Real Application Testing options

SQL>

3. The RECOMP_SERIAL subprogram unit recompiles all objects or objects within a schema in an ordered fashion. This means that any objects which are depended on by other objects are compiled first.

4. To compile all objects within the current database execute the command: execute utl_recomp.recomp_serial();

SQL> execute utl_recomp.recomp_serial();

PL/SQL procedure successfully completed.

SQL>

5. To compile only the objects in a single schema, specify the schema name: execute utl_recomp.recomp_serial(‘SCOTT’);

SQL> execute utl_recomp.recomp_serial('SCOTT');

PL/SQL procedure successfully completed.

SQL>

This completes the recompilation of objects using the package UTL_RECOMP with subprogram unit RECOMP_SERIAL.

Larry J. Catt, OCP 9i, 10g
oracle@allcompute.com
www.allcompute.com

Catt Solutions

Monthly Archives: July 2010

Enable ADMIN Tracing on Oracle Listener:

Oracle UTL_RECOMP package and the RECOMP_SERIAL subprogram

Oracle tips and tricks.