Installing Oracle Enterprise Manager Cloud Control 13.5.0.0 (13.5) on Oracle Linux 9.4 oracledna OEM May 17, 2026 This post demonstartedsthe installation of Oracle Enterprise Manager Cloud Control 13.5.0.0 (13.5) on Oracle Linux 9.4. The installation mode is Advanced Installation (SMALL). Oracle Enterprise Manager Cloud Control (OEMCC) is Oracle’s flagship IT management platform, designed to monitor, manage, and optimize databases  and middleware, applications from a single console. 1. Hardware requirements for Advanced Installation (SMALL)   Below are the hardware requirements for Oracle Management Service CPU Cores/Host – 4RAM – 10 GBHard Disk Space (With Oracle Software Library and JVMD Engine) – 28 GBTemporary Directory Hard Disk Space – 1.7 GB Below are the hardware requirements for Oracle Management AgentCPU Cores/Host – 2Agent Base Directory Space – 1.5 GBSwap Space – 500 MBTemporary Directory Hard Disk Space – 1 GBStage/Working Directory Space – 750 GB Below are the hardware requirements for Oracle Management Repository DatabaseCPU Cores/Host – 4RAM – 7 GBHard Disk Space (SYSTEM: 600MB, MGMT_TABLESPACE: 100 GB,MGMT_ECM_DEPOT_TS: 1 GB,MGMT_AD4J_TS:10 GB, TEMP 10GB, ARCHIVELOG AREA: 25GB) – 147 GB 2. Package and Kernel ParameterRequirements for Enterprise Manager Cloud Control. +++Package Requirements for Oracle Management Service+++Oracle Linux 9 and Red Hat Linux 9• binutils-2.35.2-17.0.1.el9• gcc-11.2.1-9.4.0.2.el9• gcc-c++-11.2.1-9.4.0.2.el9• glibc-2.34-28.0.1.el9_0.2.x86_64• glibc-devel-2.34-28.0.1.el9_0.2.x86_64• libaio-0.3.111-13.el9.x86_64• libgcc-11.2.1-9.4.0.2.el9.x86_64• libnsl-2.34-83.0.2.el9.x86_64• libstdc++-11.2.1-9.4.0.2.el9.x86_64• libstdc++-devel-11.2.1-9.4.0.2.el9.x86_64• make-4.3-8.el9• motif-2.3.4-25.el9.x86_64• motif-devel-2.3.4-25.el9.x86_64• openssl-3.0.1-41.0.1.el9_0• sysstat-12.5.4-3.el9 Oracle Linux 8 and Red Hat Linux 8• binutils-2.30-49.0.2.el8• gcc-8.2.1-3.5.0.1.el8• gcc-c++-8.2.1-3.5.0.1.el8• glibc-2.28-42.0.1.el8.x86_64• glibc-devel-2.28-42.0.1.el8.x86_64• glibc-devel-2.17-55-i686• libaio-0.3.110-12.el8.x86_64• libaio-devel-0.3.110-12.el8.x86_64• libgcc-8.2.1-3.5.0.1.el8.x86_64• libstdc++-8.2.1-3.5.0.1.el8.x86_64• libstdc++-devel-8.2.1-3.5.0.1.el8.x86_64• libnsl.x86_64• sysstat-11.7.3-2.el8• motif-2.3.4-16.el8.x86_64• motif-devel-2.3.4-16.el8.x86_64• redhat-lsb-4.1-47.0.1.el8.x86_64• redhat-lsb-core-4.1-47.0.1.el8.x86_64• openssl-1.1.1-8.0.1.el8• make-4.2.1-9.el8 +++Package Requirements for Oracle Management Agent+++ Oracle Linux 9 and Red Hat Linux 9• binutils-2.35.2-17.0.1.el9• glibc-common-2.34-100• libaio-0.3.111-13.el9.x86_65• libnsl-2.34-83.0.2.el9.x86_64• libstdc++-11.2.1-9.4.0.2.el9.x86_64• make-4.3-8.el9• sysstat-12.5.4-3.el9 Oracle Linux 8 and Red Hat Linux 8• binutils-2.30-49.0.2.el8• glibc-common-2.17-55• libaio-0.3.110-12.el8.x86_64• libstdc++-8.2.1-3.5.0.1.el8.x86_64• libnsl.x86_64• sysstat-11.7.3-2.el8• make-4.2.1-9.el8   +++Kernel Parameter Requirements for Oracle Management Service+++For ip_local_port_range, ensure that the lower range is set to at least 11,000 or higher vi /etc/sysctl.confnet.ipv4.ip_local_port_range = 11000 65000 Oracle recommends the minimum nproc value of 4098 (/etc/security/limits.conf) for the user responsible of running the Enterprise Manager software installation. If you are installing OMS and Management Repository (database) on the same host, which is running on a Linux operating system (32-bit or 64-bit), then set the kernel.shmmax parameterto a value prescribed in the Oracle Database Installation Guide that is published for the intended database release and platform. +++Kernel Parameter Requirements forOracle Management Agent+++There are no kernel parameter requirements for Management Agent. 3. Creating Operating System Groups and Users for Enterprise Manager Cloud Control.   The Oracle Database pre install rpm creates the Oracle user and groups automatically. 4. Create the directories for the Middleware Home, Oracle Management Service and agent. Oracle Middleware home or Oracle Home (Middleware home or Oracle Home) is the parent directory that has the Oracle WebLogic Server home, the Java Development Kit, the OMS, the Web tier instance files, and other relevant directories and files. This is where the OMS and the Plug-ins are deployed. mkdir -p /app/em13c/middleware Oracle Management Service Instance Base Location is a directory outside the Middleware home where the configuration files of the OMS are stored. By default, gc_inst is the OracleManagement Service Base Location. However, we can choose to use a custom name. mkdir -p /app/em13c/gc_inst Agent Base Directory is a directory outside the Oracle Middleware home (or Oracle home), where the Management Agent home is created. mkdir -p /app/em13c/agent Agent Home is the subdirectory within the Agent Base Directory where the Management Agent installed. mkdir -p /app/em13c/agent/agent_13.5.0.0.0 Agent Instance Directory is a subdirectory (agent_inst) within the Agent Base Directory that is created for storing all Management Agent-related configuration files.mkdir -p /app/em13c/agent/agent_inst 5. Install the respository database for Enterprise Manager Cloud Control. [oracle@oem db]$ export CV_ASSUME_DISTID=OEL7.8[oracle@oem db]$ ./runInstaller -applyRU /miss/oracle/19.27/37642901[oracle@oem db]$ dbca 6. Prerequisites for Installing Enterprise Manager System at Database level. Modify the belowp parameters by connecting to the database as SYSDBA and running the following: SQL> alter system set “_allow_insert_with_update_check”=true scope=both;System altered. SQL> alter system set session_cached_cursors=200 scope=spfile;System altered. SQL> alter system set shared_pool_size=600M scope=spfile;System altered. SQL> alter system set processes=600 scope=spfile;System altered.   SQL> shut immediate;Database closed.Database dismounted.ORACLE instance shut down. SQL> startupORACLE instance started.Total System Global Area 2986342864 bytesFixed Size 8944080 bytesVariable Size 654311424 bytesDatabase Buffers 2315255808 bytesRedo Buffers 7831552 bytesDatabase mounted.Database opened. Chek the parameter values updated or not. SQL> show parameter “_allow_insert_with_update_check”NAME TYPE VALUE———————————— ———– ——————————_allow_insert_with_update_check boolean TRUE   SQL> show parameter session_cached_cursorsNAME TYPE VALUE———————————— ———– ——————————session_cached_cursors integer 200   SQL> show parameter shared_pool_sizeNAME TYPE VALUE———————————— ———– ——————————shared_pool_size big integer 608M   SQL> show parameter processesNAME TYPE VALUE———————————— ———– ——————————aq_tm_processes integer 1db_writer_processes integer 1gcs_server_processes integer 0global_txn_processes integer 1job_queue_processes integer 60log_archive_max_processes integer 4processes integer 600 6. Installing Oracle Enterprise Manager Cloud Control 13c Release 5 (13.5.0.0) [oracle@oem oem13.5_soft]$ pwd/miss/oracle/oem13.5_soft [oracle@oem oem13.5_soft]$ ls -lrttotal 8363828-rw-r–r–. 1 oracle oinstall 1586801533 May 15 09:27 em13500_linux64.bin-rw-r–r–. 1 oracle oinstall 1897494675 May 15 09:29 em13500_linux64-2.zip-rw-r–r–. 1 oracle oinstall 2130750885 May 15 09:37 em13500_linux64-3.zip-rw-r–r–. 1 oracle oinstall 1454982045 May 15 09:45 em13500_linux64-4.zip-rw-r–r–. 1 oracle oinstall 1494500710 May 15 09:48 em13500_linux64-5.zip If your temporary directory does not have this space, then pass the -J-Djava.io.tmpdir parameter and provide an alternative directory where there is 14 GB of space. ./em13500_linux64.bin -J-Djava.io.tmpdir=/miss/oracle/oem_tmp [oracle@oem oem13.5_soft]$ ./em13500_linux64.bin -J-Djava.io.tmpdir=/miss/oracle/oem_tmpLauncher log file is /miss/oracle/oem_tmp/OraInstall2026-05-17_03-15-41PM/launcher2026-05-17_03-15-41PM.log.Extracting the installer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . DoneChecking monitor: must be configured to display at least 256 colors. Actual 16777216 PassedChecking swap space: must be greater than 512 MB. Actual 8191 MB PassedChecking if this platform requires a 64-bit JVM. Actual 64 Passed (64-bit not required)Preparing to launch the Oracle Universal Installer from /miss/oracle/oem_tmp/OraInstall2026-05-17_03-15-41PMScratchPathValue :/miss/oracle/oem_tmp/OraInstall2026-05-17_03-15-41PMMay 17, 2026 3:16:32 PM org.apache.sshd.common.io.DefaultIoServiceFactoryFactory getIoServiceProviderINFO: No detected/configured IoServiceFactoryFactory using Nio2ServiceFactoryFactory ……………………………………………………………………………………..Installation in progress (Sunday, May 17, 2026 3:51:01 PM IST)98% Done.Install successful Linking in progress (Sunday, May 17, 2026 3:51:01 PM IST)Link successful Setup in progress (Sunday, May 17, 2026 3:51:01 PM IST)Setup successful Saving inventory (Sunday, May 17, 2026 3:51:01 PM