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Archive for February, 2019

OPatch – Error occurred during initialization of VM, Could not reserve enough space for XXXXXXKB object heap

Posted by FatDBA on February 19, 2019

Hi Guys,

Disucssing a random issue what i’ve encountered few hours back, is a problem related with the new version of the OPatch which when unzipped generating a weird error and is discussed below.



[oracle@gunna:~/app/oracle/product/12.2.0/dbhome_1/OPatch/28822515]$ opatch prereq CheckConflictAgainstOHWithDetail -ph ./

Error occurred during initialization of VM
Could not reserve enough space for 39957221KB object heap


On OCS download page for OPatch, the auto version is set to 32-bit (Linux X86).
Check if the name of the downloaded file is something similar ‘p6880880_122010_LINUX.zip’. If yes, then you have downloaded the 32 bit version. Choose ‘Linux x86-64’ as the right vrsion and try again

Let’s try again.



[oracle@gunna:~/app/oracle/product/12.2.0/dbhome_1/OPatch/28822515]$ opatch prereq CheckConflictAgainstOHWithDetail -ph ./
Oracle Interim Patch Installer version 12.2.0.1.16
Copyright (c) 2018, Oracle Corporation.  All rights reserved.

PREREQ session

Oracle Home       : /home/oracle/app/oracle/product/12.2.0/dbhome_1
Central Inventory : /home/oracle/app/oraInventory
   from           : /home/oracle/app/oracle/product/12.2.0/dbhome_1/oraInst.loc
OPatch version    : 12.2.0.1.16
OUI version       : 12.2.0.1.4
Log file location : /home/oracle/app/oracle/product/12.2.0/dbhome_1/cfgtoollogs/opatch/opatch2018-12-24_00-46-02AM_1.log

Invoking prereq "checkconflictagainstohwithdetail"

Prereq "checkConflictAgainstOHWithDetail" passed.

OPatch succeeded.


All good now!

Hope It Helps
Prashant ‘Fatdba’ Dixit

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