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Proper kernel settings for TimesTen database are critical. Table 5 lists the parameters that were set for the TimesTen database installation.
Parameter name | Value | Description |
pagesize | 4096 | Default page size |
kernel.shmmax | 9,600,000,000,000 | The maximum size of a single shared memory segment in bytes, 80% of physical memory |
kernel.shmall | 2,343,750,000 | The maximum size of a single shared memory segment in bytes, equals to shmmax/pagesize |
kernel.sem | 4155 400000 2000 4157 | semaphore values for up to 4000 concurrent user connections to the Oracle TimesTen database |
hugepagesize | 2048KB | HugePages page size |
vm.nr_hugePages | 4,577,636 | The number of the hugepages equals to shmmax/hugepagesize |
In addition to the kernel parameter settings described in Table 5, the following settings are required for the TimesTen database.