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Monday, April 29, 2024

ORA-19751: could not create the change tracking file ORA-19750: change tracking file: ORA-17502: ksfdcre:4 Failed to create file

ISSUE

SQL> alter database open resetlogs;

alter database open resetlogs
*
ERROR at line 1:
ORA-19751: could not create the change tracking file
ORA-19750: change tracking file:
'+DATA/DB_NAME/CHANGETRACKING/ctf.281.1234567789'
ORA-17502: ksfdcre:4 Failed to create file
+DATA/DB_NAME/CHANGETRACKING/ctf.281.1234567789
ORA-15046: ASM file name
'+DATA/DB_NAME/CHANGETRACKING/ctf.281.1234567789' is not in
single-file creation form
ORA-17503: ksfdopn:2 Failed to open file
+DATA/DB_NAME/CHANGETRACKING/ctf.281.1234567789
ORA-15012: ASM file '+DATA/DB_NAME/CHANGETRACKING/ctf.281.1234567789'

does not exist

ACTIONS PERFORMED

Database was restored and recovered using rman and attempted to open with resetlogs.

Source Database using a 'block change tracking' file stored in ASM. Controlfile and Database is restored and recovered successfully but the open resetlogs fails with above errors.

ISSUE IS DUE TO

The change tracking file is originally created like this:
.
SQL> alter database enable block change tracking using file '+<DGNAME>';

Because the change tracking file is created by only specifying the ASM Diskgroup, a fully qualified ASM name is used for this file and stored in the DataDictionary.
When this file is not found during the open phase, the same filename will be used to recreate the file automatically by using the fully qualified ASM name which is not allowed, hence the error.

Bug 5362418 is opened for this has been closed as a duplicate of 11744544.

SOLUTION

- Disable the block change tracking

- try OPEN RESTLOGS again, if any error, open normally.

- And enable block chnage tracking again, Use an ASM alias in the diskgroup. This way, the alias will be recreated successfully (which in turn will be linked to a new ASM fully qualified name behind the scenes)

SQL> alter database disable BLOCK CHANGE TRACKING;

Database altered.

SQL> alter database open resetlogs;

alter database open resetlogs

ERROR at line 1:

ORA-01139: RESETLOGS option only valid after an incomplete database recovery

SQL> alter database open;

Database altered.

SQL> ALTER DATABASE ENABLE BLOCK CHANGE TRACKING USING FILE '+DATA';

Database altered.

Friday, February 9, 2024

ORA-04063: package body "SYS.DBMS_RCVMAN" has errors

ISSUE DESCRIPTION

rman target /

Recovery Manager: Release 12.2.0.1.0 - Production on Fri Feb 9 19:26:23 2024

Copyright (c) 1982, 2017, Oracle and/or its affiliates.  All rights reserved.

ORACLE error from target database:
ORA-04063: package body "SYS.DBMS_RCVMAN" has errors
ORA-06508: PL/SQL: could not find program unit being called: "SYS.DBMS_RCVMAN"

error executing package DBMS_RCVMAN in TARGET database
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-00554: initialization of internal recovery manager package failed
RMAN-06429: TARGET database is not compatible with this version of RMAN

COMPILE the objects

rman target /

Recovery Manager: Release 12.2.0.1.0 - Production on Fri Feb 9 19:26:23 2024

STATUS of the OBJECTS

select owner,object_name,object_type,status from dba_objects where status='INVALID'
OWNER OBJECT_NAME OBJECT_TYPE STATUS
-------------------- ------------------------------ ----------------------- -------
SYS DBMS_RCVMAN PACKAGE BODY INVALID

SOLUTION

SQL> alter PACKAGE SYS.DBMS_RCVMAN compile BODY;

Warning: Package Body altered with compilation errors.

SQL>
SQL>
SQL>
SQL> sho error
Errors for PACKAGE BODY SYS.DBMS_RCVMAN:

LINE/COL ERROR
-------- -----------------------------------------------------------------
462/1    PL/SQL: Item ignored
463/8    PLS-00400: different number of columns between cursor SELECT
         statement and return value

8247/1   PL/SQL: Item ignored
8248/8   PLS-00400: different number of columns between cursor SELECT
         statement and return value

SQL>

SQL> @?/rdbms/admin/prvtrmns.plb

Session altered.

Package body created.

Session altered.

SQL>

SQL> !

rman target /

Recovery Manager: Release 12.2.0.1.0 - Production on Fri Feb 9 21:07:36 2024

connected to target database: DBNAME (DBID=123456789)

RMAN> exit

Recovery Manager complete.

Thursday, November 9, 2023

GATHER STATS for TABLE/SCHEMA/DATABASE/SYSTEM and LOCK STATS scripts

GATHER STATS for TABLE/SCHEMA/DATABASE/SYSTEM and LOCK STATS scripts

TABLE STATS

~~~~~~~~~~~~~~~~~~~~~~~~~~~~

EXEC DBMS_STATS.gather_table_stats('HR','EMPLOYEES');

EXEC DBMS_STATS.gather_table_stats('HR','EMPLOYEES',cascade=>TRUE);

EXEC DBMS_STATS.gather_table_stats('SCOTT', 'EMPLOYEES', estimate_percent => 15, cascade => TRUE);

exec dbms_stats.gather_table_stats(ownname=>'&Schema_name',tabname=>'&Table_name',estimate_percent=>DBMS_STATS.AUTO_SAMPLE_SIZE,cascade=>TRUE,degree =>4);

exec DBMS_STATS.GATHER_TABLE_STATS (ownname => '&OWNER' , tabname => '&TAB_NAME',cascade => true, estimate_percent => 10,method_opt=>'for all indexed columns size 1',granularity => 'ALL', degree => 1);

INDEX STATS

~~~~~~~~~~~~~~~~~~~~~~~~~~~~

EXEC DBMS_STATS.gather_index_stats('HR','EMPLOYEES_PK');

exec DBMS_STATS.GATHER_INDEX_STATS(ownname => '&OWNER',indname =>'&INDEX_NAME',estimate_percent =>DBMS_STATS.AUTO_SAMPLE_SIZE);

SCHEMA STATS

~~~~~~~~~~~~~~~~~~~~~~~~~~~~

EXEC DBMS_STATS.gather_schema_stats('SCOTT');

EXEC DBMS_STATS.gather_schema_stats('SCOTT', estimate_percent => 15, cascade => TRUE);

exec dbms_stats.gather_schema_stats(ownname=>'&schema_name',ESTIMATE_PERCENT=>dbms_stats.auto_sample_size,degree =>4);

exec dbms_stats.gather_schema_stats(ownname=>'&schema_name', CASCADE=>TRUE,ESTIMATE_PERCENT=>dbms_stats.auto_sample_size,degree =>4);

DATABASE STATS

~~~~~~~~~~~~~~~~~~~~~~~~~~~~

EXEC DBMS_STATS.gather_database_stats;

EXEC DBMS_STATS.gather_database_stats(estimate_percent => 15, cascade => TRUE);

exec dbms_stats.gather_database_stats(cascade=>TRUE,method_opt =>'FOR ALL COLUMNS SIZE AUTO');

EXEC DBMS_STATS.GATHER_DATABASE_STATS(ESTIMATE_PERCENT=>DBMS_STATS.AUTO_SAMPLE_SIZE,degree=>6);

EXEC DBMS_STATS.GATHER_DATABASE_STATS(ESTIMATE_PERCENT=>dbms_stats.auto_sample_size,CASCADE => TRUE,degree => 4);

DICTIONARY STATS

~~~~~~~~~~~~~~~~~~~~~~~~~~~~

EXEC DBMS_STATS.gather_dictionary_stats;

EXEC DBMS_STATS.gather_system_stats;

EXEC DBMS_STATS.gather_fixed_objects_stats;

lock/unlock statistics on table

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

exec dbms_stats.lock_table_stats('&OWNER', '&TAB_NAME');

exec dbms_stats.unlock_table_stats('&OWNER', '&TAB_NAME');

SELECT stattype_locked FROM dba_tab_statistics WHERE table_name='RAJ' and owner='SH';

CHECK STALE STATS

~~~~~~~~~~~~~~~~~~~~~~~~~~~~

SELECT owner, table_name, last_analyzed, stale_stats

FROM dba_tab_statistics

WHERE table_name='EMPLOYEES'

and owner='HR';

SELECT owner, table_name, index_name last_analyzed, stale_stats FROM dba_ind_statistics

WHERE table_name='EMPLOYEES'

and owner = 'HR';

Linux Script to Gather Stats

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

#!/bin/bash

. /home/oracle/.bash_profile

export ORACLE_HOME=/u01/app/oracle/product/19.3/db_home

export ORACLE_BASE=/u01/app/oracle

export ORACLE_SID=orcl

export DATE=$(date +%y-%m-%d_%H%M%S)

#### Gather HR schema stats ####

sqlplus / as sysdba << EOF > /tmp/HR_stats_gather_$DATE.log

EXEC DBMS_STATS.gather_schema_stats('HR');

EOF

echo "Stats gathered succeeded"

Tuesday, November 7, 2023

to CHECK & Pause/Resume/Kill a Running RMAN Backup

TO VIEW BACKUP STATUS for RMAN BACKUP Processes

SELECT b.opname,b.SID, b.SERIAL#, a.status,b.CONTEXT, b.SOFAR, b.TOTALWORK,

ROUND (b.SOFAR/b.TOTALWORK*100, 2) "% COMPLETE"

FROM gV$SESSION_LONGOPS b, gv$session a

WHERE b.OPNAME LIKE 'RMAN%'

AND b.OPNAME NOT LIKE '%aggregate%'

and a.sid=b.sid

AND b.TOTALWORK! = 0 AND b.SOFAR <> b.TOTALWORK;

TO GENERATE KILL SESSION scripts for RMAN BACKUP Processes

select 'alter system kill session '''||sid||'',''||serial#||''' immediate;' FROM V$SESSION_LONGOPS

WHERE OPNAME LIKE 'RMAN%' AND OPNAME NOT LIKE '%aggregate%'

AND TOTALWORK! = 0 AND SOFAR <> TOTALWORK;

1. Pause/Resume/Kill a Running RMAN Backup

To Check if there is an RMAN backup is currently running:

col START_TIME for a15

col END_TIME for a15

col TIME_TAKEN_DISPLAY for a10

col INPUT_BYTES_DISPLAY heading "DATA SIZE" for a10

col OUTPUT_BYTES_DISPLAY heading "Backup Size" for a11

col OUTPUT_BYTES_PER_SEC_DISPLAY heading "Speed/s" for a10

col output_device_type heading "Device_TYPE" for a11

SELECT to_char (start_time,'DD-MON-YY HH24:MI') START_TIME,to_char(end_time,'DD-MON-YY HH24:MI') END_TIME, time_taken_display, status,input_type, output_device_type,input_bytes_display, output_bytes_display,output_bytes_per_sec_display,COMPRESSION_RATIO COMPRESS_RATIO FROM v$rman_backup_job_details WHERE status like 'RUNNING%';

2. To Pause an already running RMAN backup: [This is only applicable for Linux OS]

set pages 0 feedback off

select 'TO PAUSE THE RUNNING RMAN BACKUP RUN THIS OS COMMAND:=> kill -STOP '||listagg (p.spid, ' ') WITHIN GROUP (ORDER BY p.spid) from v$session s, v$process p where s.program like 'rman@%' and p.addr=s.paddr;

3. To Resume an already "Paused" RMAN backup: [This is only applicable for Linux OS]

set pages 0 feedback off

select 'TO RESUME A "PAUSED" RMAN BACKUP RUN THIS OS COMMAND:=> kill -CONT '||listagg (p.spid, ' ') WITHIN GROUP (ORDER BY p.spid) from v$session s, v$process p where s.program like 'rman@%' and p.addr=s.paddr;

4. To Terminate an already running RMAN backup: [This is only applicable for Linux OS]

set pages 0 feedback off

select 'TO KILL THE RUNNING RMAN BACKUP RUN THIS OS COMMAND:=> kill -9 '||listagg (p.spid, ' ') WITHIN GROUP (ORDER BY p.spid) from v$session s, v$process p where s.program like 'rman@%' and p.addr=s.paddr;

Friday, February 10, 2023

Java (1.6) could not be located. OPatch cannot proceed!

We get below java error, when we try to query opatch utility like lsinventory, version, apply, rollback ...etc

follow below steps/workaround for the issue

Java (1.6) could not be located

Details of error are as follows.

[SERVER1]/u01/app$ OPatch/opatch version
Java (1.6) could not be located. OPatch cannot proceed!
OPatch returns with error code = 1
[SERVER1]/u01/app$ 
[SERVER1]/u01/app/OPatch $

OPatch cannot proceed!

This errors are related with the Opatch version or opatch utility was downloaded for a wrong platform or using older version of opatch.

Install the latest opatch

Use the JDK option like following.

which java

copy the java path and go to jdk location inside java home

opatch apply -jdk <<FULL_PATH_OF_JDK>

example output as below.

Use the JDK option like following.


[SERVER1]/u01/app$ 
[SERVER1]/u01/app$ OPatch/opatch version
Java (1.6) could not be located. OPatch cannot proceed!
OPatch returns with error code = 1
[SERVER1]/u01/app$ 
[SERVER1]/u01/app/OPatch $ 


[SERVER1]/u01/app/OPatch $ ./opatch lsinventory -jdk /export2/jdk/ -oh /u01/app/
Oracle Interim Patch Installer version 13.9.4.2.4
Copyright (c) 2021, Oracle Corporation. All rights reserved.


Oracle Home : /u01/app
Central Inventory : /u01/app/18c/oraInventory
from : /u01/app//oraInst.loc

OPatch version    : 12.2.0.1.33
OUI version       : 12.2.0.1.4

Log file location : /u01/app/cfgtoollogs/opatch/opatch2021-06-21_14-11-18PM_1.log

Lsinventory Output file location : /u01/app/cfgtoollogs/opatch/lsinv/lsinventory2021-06-21_14-11-18PM.txt

--------------------------------------------------------------------------------
ARU platform id: 226
ARU platform description:: Linux x86-64

Installed Top-level Products (1):

Oracle Database 12c                                                  12.2.0.1.0
There are 1 products installed in this Oracle Home.


There are no Interim patches installed in this Oracle Home.


--------------------------------------------------------------------------------

OPatch succeeded.
[SERVER1]/u01/app/OPatch $